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* [PATCH v2 4/9] vgacon, arch/*: remove unused screen_info definitions
From: Arnd Bergmann @ 2023-07-19 12:39 UTC (permalink / raw)
  To: linux-fbdev, Thomas Zimmermann, Helge Deller,
	Javier Martinez Canillas
  Cc: Arnd Bergmann, David S. Miller, K. Y. Srinivasan, Ard Biesheuvel,
	Borislav Petkov, Brian Cain, Catalin Marinas, Christophe Leroy,
	Daniel Vetter, Dave Hansen, David Airlie, Deepak Rawat,
	Dexuan Cui, Dinh Nguyen, Greg Kroah-Hartman, Guo Ren,
	Haiyang Zhang, Huacai Chen, Ingo Molnar,
	John Paul Adrian Glaubitz, Khalid Aziz, Linus Walleij,
	Matt Turner, Max Filippov, Michael Ellerman, Nicholas Piggin,
	Palmer Dabbelt, Russell King, Thomas Bogendoerfer,
	Thomas Gleixner, WANG Xuerui, Wei Liu, Will Deacon, x86,
	linux-alpha, linux-kernel, linux-arm-kernel, linux-efi,
	linux-csky, linux-hexagon, linux-ia64, loongarch, linux-mips,
	linuxppc-dev, linux-riscv, linux-sh, sparclinux, linux-hyperv,
	dri-devel, Palmer Dabbelt
In-Reply-To: <20230719123944.3438363-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

A number of architectures either kept the screen_info definition for
historical purposes as it used to be required by the generic VT code, or
they copied it from another architecture in order to build the VGA console
driver in an allmodconfig build. The mips definition is used by some
platforms, but the initialization on jazz is not needed.

Now that vgacon no longer builds on these architectures, remove the
stale definitions and initializations.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/csky/kernel/setup.c          | 12 ------------
 arch/hexagon/kernel/Makefile      |  2 --
 arch/hexagon/kernel/screen_info.c |  3 ---
 arch/mips/jazz/setup.c            |  9 ---------
 arch/nios2/kernel/setup.c         |  5 -----
 arch/sh/kernel/setup.c            |  5 -----
 arch/sparc/kernel/setup_32.c      | 13 -------------
 arch/sparc/kernel/setup_64.c      | 13 -------------
 arch/xtensa/kernel/setup.c        | 12 ------------
 9 files changed, 74 deletions(-)
 delete mode 100644 arch/hexagon/kernel/screen_info.c

diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c
index 106fbf0b6f3b4..51012e90780d6 100644
--- a/arch/csky/kernel/setup.c
+++ b/arch/csky/kernel/setup.c
@@ -8,22 +8,10 @@
 #include <linux/of_fdt.h>
 #include <linux/start_kernel.h>
 #include <linux/dma-map-ops.h>
-#include <linux/screen_info.h>
 #include <asm/sections.h>
 #include <asm/mmu_context.h>
 #include <asm/pgalloc.h>
 
-#ifdef CONFIG_DUMMY_CONSOLE
-struct screen_info screen_info = {
-	.orig_video_lines	= 30,
-	.orig_video_cols	= 80,
-	.orig_video_mode	= 0,
-	.orig_video_ega_bx	= 0,
-	.orig_video_isVGA	= 1,
-	.orig_video_points	= 8
-};
-#endif
-
 static void __init csky_memblock_init(void)
 {
 	unsigned long lowmem_size = PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);
diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
index e73cb321630ec..3fdf937eb572e 100644
--- a/arch/hexagon/kernel/Makefile
+++ b/arch/hexagon/kernel/Makefile
@@ -17,5 +17,3 @@ obj-y += vm_vectors.o
 obj-$(CONFIG_HAS_DMA) += dma.o
 
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
-
-obj-$(CONFIG_VGA_CONSOLE) += screen_info.o
diff --git a/arch/hexagon/kernel/screen_info.c b/arch/hexagon/kernel/screen_info.c
deleted file mode 100644
index 1e1ceb18bafe7..0000000000000
--- a/arch/hexagon/kernel/screen_info.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#include <linux/screen_info.h>
-
-struct screen_info screen_info;
diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c
index ee044261eb223..23059ead773fc 100644
--- a/arch/mips/jazz/setup.c
+++ b/arch/mips/jazz/setup.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/console.h>
-#include <linux/screen_info.h>
 #include <linux/platform_device.h>
 #include <linux/serial_8250.h>
 #include <linux/dma-mapping.h>
@@ -76,14 +75,6 @@ void __init plat_mem_setup(void)
 
 	_machine_restart = jazz_machine_restart;
 
-#ifdef CONFIG_VT
-	screen_info = (struct screen_info) {
-		.orig_video_cols	= 160,
-		.orig_video_lines	= 64,
-		.orig_video_points	= 16,
-	};
-#endif
-
 	add_preferred_console("ttyS", 0, "9600");
 }
 
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index 8582ed9658447..da122a5fa43b2 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -19,7 +19,6 @@
 #include <linux/memblock.h>
 #include <linux/initrd.h>
 #include <linux/of_fdt.h>
-#include <linux/screen_info.h>
 
 #include <asm/mmu_context.h>
 #include <asm/sections.h>
@@ -36,10 +35,6 @@ static struct pt_regs fake_regs = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 					0, 0, 0, 0, 0, 0,
 					0};
 
-#ifdef CONFIG_VT
-struct screen_info screen_info;
-#endif
-
 /* Copy a short hook instruction sequence to the exception address */
 static inline void copy_exception_handler(unsigned int addr)
 {
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index b3da2757faaf3..3d80515298d26 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -7,7 +7,6 @@
  *  Copyright (C) 1999  Niibe Yutaka
  *  Copyright (C) 2002 - 2010 Paul Mundt
  */
-#include <linux/screen_info.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/initrd.h>
@@ -69,10 +68,6 @@ EXPORT_SYMBOL(cpu_data);
 struct sh_machine_vector sh_mv = { .mv_name = "generic", };
 EXPORT_SYMBOL(sh_mv);
 
-#ifdef CONFIG_VT
-struct screen_info screen_info;
-#endif
-
 extern int root_mountflags;
 
 #define RAMDISK_IMAGE_START_MASK	0x07FF
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 34ef7febf0d56..e3b72a7b46d37 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -17,7 +17,6 @@
 #include <linux/initrd.h>
 #include <asm/smp.h>
 #include <linux/user.h>
-#include <linux/screen_info.h>
 #include <linux/delay.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
@@ -51,18 +50,6 @@
 
 #include "kernel.h"
 
-struct screen_info screen_info = {
-	0, 0,			/* orig-x, orig-y */
-	0,			/* unused */
-	0,			/* orig-video-page */
-	0,			/* orig-video-mode */
-	128,			/* orig-video-cols */
-	0,0,0,			/* ega_ax, ega_bx, ega_cx */
-	54,			/* orig-video-lines */
-	0,                      /* orig-video-isVGA */
-	16                      /* orig-video-points */
-};
-
 /* Typing sync at the prom prompt calls the function pointed to by
  * romvec->pv_synchook which I set to the following function.
  * This should sync all filesystems and return, for now it just
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 6546ca9d4d3f1..6a4797dec34b4 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -15,7 +15,6 @@
 #include <linux/ptrace.h>
 #include <asm/smp.h>
 #include <linux/user.h>
-#include <linux/screen_info.h>
 #include <linux/delay.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
@@ -68,18 +67,6 @@
 DEFINE_SPINLOCK(ns87303_lock);
 EXPORT_SYMBOL(ns87303_lock);
 
-struct screen_info screen_info = {
-	0, 0,			/* orig-x, orig-y */
-	0,			/* unused */
-	0,			/* orig-video-page */
-	0,			/* orig-video-mode */
-	128,			/* orig-video-cols */
-	0, 0, 0,		/* unused, ega_bx, unused */
-	54,			/* orig-video-lines */
-	0,                      /* orig-video-isVGA */
-	16                      /* orig-video-points */
-};
-
 static void
 prom_console_write(struct console *con, const char *s, unsigned int n)
 {
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index aba3ff4e60d85..3f22d0537818d 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -19,7 +19,6 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/proc_fs.h>
-#include <linux/screen_info.h>
 #include <linux/kernel.h>
 #include <linux/percpu.h>
 #include <linux/reboot.h>
@@ -49,17 +48,6 @@
 #include <asm/timex.h>
 #include <asm/traps.h>
 
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
-struct screen_info screen_info = {
-	.orig_x = 0,
-	.orig_y = 24,
-	.orig_video_cols = 80,
-	.orig_video_lines = 24,
-	.orig_video_isVGA = 1,
-	.orig_video_points = 16,
-};
-#endif
-
 #ifdef CONFIG_BLK_DEV_INITRD
 extern unsigned long initrd_start;
 extern unsigned long initrd_end;
-- 
2.39.2


^ permalink raw reply related

* [PATCH v2 3/9] dummycon: limit Arm console size hack to footbridge
From: Arnd Bergmann @ 2023-07-19 12:39 UTC (permalink / raw)
  To: linux-fbdev, Thomas Zimmermann, Helge Deller,
	Javier Martinez Canillas
  Cc: Arnd Bergmann, David S. Miller, K. Y. Srinivasan, Ard Biesheuvel,
	Borislav Petkov, Brian Cain, Catalin Marinas, Christophe Leroy,
	Daniel Vetter, Dave Hansen, David Airlie, Deepak Rawat,
	Dexuan Cui, Dinh Nguyen, Greg Kroah-Hartman, Guo Ren,
	Haiyang Zhang, Huacai Chen, Ingo Molnar,
	John Paul Adrian Glaubitz, Khalid Aziz, Linus Walleij,
	Matt Turner, Max Filippov, Michael Ellerman, Nicholas Piggin,
	Palmer Dabbelt, Russell King, Thomas Bogendoerfer,
	Thomas Gleixner, WANG Xuerui, Wei Liu, Will Deacon, x86,
	linux-alpha, linux-kernel, linux-arm-kernel, linux-efi,
	linux-csky, linux-hexagon, linux-ia64, loongarch, linux-mips,
	linuxppc-dev, linux-riscv, linux-sh, sparclinux, linux-hyperv,
	dri-devel
In-Reply-To: <20230719123944.3438363-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

The dummycon default console size used to be determined by architecture,
but now this is a Kconfig setting on everything except ARM. Tracing this
back in the historic git trees, this was used to match the size of VGA
console or VGA framebuffer on early machines, but nowadays that code is
no longer used, except probably on the old footbridge/netwinder since
that is the only one that supports vgacon.

On machines with a framebuffer, booting with DT so far results in always
using the hardcoded 80x30 size in dummycon, while on ATAGS the setting
can come from a bootloader specific override. Both seem to be worse
choices than the Kconfig setting, since the actual text size for fbcon
also depends on the selected font.

Make this work the same way as everywhere else and use the normal
Kconfig setting, except for the footbridge with vgacon, which keeps
using the traditional code. If vgacon is disabled, footbridge can
also ignore the setting. This means the screen_info only has to be
provided when either vgacon or EFI are enabled now.

To limit the amount of surprises on Arm, change the Kconfig default
to the previously used 80x30 setting instead of the usual 80x25.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/kernel/atags_parse.c    | 2 +-
 arch/arm/kernel/setup.c          | 3 +--
 drivers/video/console/Kconfig    | 5 +++--
 drivers/video/console/dummycon.c | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 33f6eb5213a5a..4c815da3b77b0 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -69,7 +69,7 @@ static int __init parse_tag_mem32(const struct tag *tag)
 
 __tagtable(ATAG_MEM, parse_tag_mem32);
 
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
+#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
 static int __init parse_tag_videotext(const struct tag *tag)
 {
 	screen_info.orig_x            = tag->u.videotext.x;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c66b560562b30..40326a35a179b 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -928,8 +928,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
 		request_resource(&ioport_resource, &lp2);
 }
 
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) || \
-    defined(CONFIG_EFI)
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
 struct screen_info screen_info = {
  .orig_video_lines	= 30,
  .orig_video_cols	= 80,
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 6af90db6d2da9..b575cf54174af 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -52,7 +52,7 @@ config DUMMY_CONSOLE
 
 config DUMMY_CONSOLE_COLUMNS
 	int "Initial number of console screen columns"
-	depends on DUMMY_CONSOLE && !ARM
+	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
 	default 160 if PARISC
 	default 80
 	help
@@ -62,8 +62,9 @@ config DUMMY_CONSOLE_COLUMNS
 
 config DUMMY_CONSOLE_ROWS
 	int "Initial number of console screen rows"
-	depends on DUMMY_CONSOLE && !ARM
+	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
 	default 64 if PARISC
+	default 30 if ARM
 	default 25
 	help
 	  On PA-RISC, the default value is 64, which should fit a 1280x1024
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index f1711b2f9ff05..70549fecee12c 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -18,7 +18,7 @@
  *  Dummy console driver
  */
 
-#if defined(__arm__)
+#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
 #define DUMMY_COLUMNS	screen_info.orig_video_cols
 #define DUMMY_ROWS	screen_info.orig_video_lines
 #else
-- 
2.39.2


^ permalink raw reply related

* [PATCH v2 2/9] vgacon: rework screen_info #ifdef checks
From: Arnd Bergmann @ 2023-07-19 12:39 UTC (permalink / raw)
  To: linux-fbdev, Thomas Zimmermann, Helge Deller,
	Javier Martinez Canillas
  Cc: Arnd Bergmann, David S. Miller, K. Y. Srinivasan, Ard Biesheuvel,
	Borislav Petkov, Brian Cain, Catalin Marinas, Christophe Leroy,
	Daniel Vetter, Dave Hansen, David Airlie, Deepak Rawat,
	Dexuan Cui, Dinh Nguyen, Greg Kroah-Hartman, Guo Ren,
	Haiyang Zhang, Huacai Chen, Ingo Molnar,
	John Paul Adrian Glaubitz, Khalid Aziz, Linus Walleij,
	Matt Turner, Max Filippov, Michael Ellerman, Nicholas Piggin,
	Palmer Dabbelt, Russell King, Thomas Bogendoerfer,
	Thomas Gleixner, WANG Xuerui, Wei Liu, Will Deacon, x86,
	linux-alpha, linux-kernel, linux-arm-kernel, linux-efi,
	linux-csky, linux-hexagon, linux-ia64, loongarch, linux-mips,
	linuxppc-dev, linux-riscv, linux-sh, sparclinux, linux-hyperv,
	dri-devel
In-Reply-To: <20230719123944.3438363-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

On non-x86 architectures, the screen_info variable is generally only
used for the VGA console where supported, and in some cases the EFI
framebuffer or vga16fb.

Now that we have a definite list of which architectures actually use it
for what, use consistent #ifdef checks so the global variable is only
defined when it is actually used on those architectures.

Loongarch and riscv have no support for vgacon or vga16fb, but
they support EFI firmware, so only that needs to be checked, and the
initialization can be removed because that is handled by EFI.
IA64 has both vgacon and EFI, though EFI apparently never uses
a framebuffer here.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2 changes:
 - split out mips/jazz change
 - improve ia64 #ifdef changes
---
 arch/alpha/kernel/setup.c      |  2 ++
 arch/alpha/kernel/sys_sio.c    |  2 ++
 arch/ia64/kernel/setup.c       |  6 ++++++
 arch/loongarch/kernel/setup.c  |  2 ++
 arch/mips/kernel/setup.c       |  2 +-
 arch/mips/sibyte/swarm/setup.c |  2 +-
 arch/mips/sni/setup.c          |  2 +-
 arch/riscv/kernel/setup.c      | 11 ++---------
 8 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index b650ff1cb022e..b4d2297765c02 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -131,6 +131,7 @@ static void determine_cpu_caches (unsigned int);
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
 
+#ifdef CONFIG_VGA_CONSOLE
 /*
  * The format of "screen_info" is strange, and due to early
  * i386-setup code. This is just enough to make the console
@@ -147,6 +148,7 @@ struct screen_info screen_info = {
 };
 
 EXPORT_SYMBOL(screen_info);
+#endif
 
 /*
  * The direct map I/O window, if any.  This should be the same
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 7c420d8dac53d..7de8a5d2d2066 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -57,11 +57,13 @@ sio_init_irq(void)
 static inline void __init
 alphabook1_init_arch(void)
 {
+#ifdef CONFIG_VGA_CONSOLE
 	/* The AlphaBook1 has LCD video fixed at 800x600,
 	   37 rows and 100 cols. */
 	screen_info.orig_y = 37;
 	screen_info.orig_video_cols = 100;
 	screen_info.orig_video_lines = 37;
+#endif
 
 	lca_init_arch();
 }
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5a55ac82c13a4..d2c66efdde560 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -86,9 +86,13 @@ EXPORT_SYMBOL(local_per_cpu_offset);
 #endif
 unsigned long ia64_cycles_per_usec;
 struct ia64_boot_param *ia64_boot_param;
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
 struct screen_info screen_info;
+#endif
+#ifdef CONFIG_VGA_CONSOLE
 unsigned long vga_console_iobase;
 unsigned long vga_console_membase;
+#endif
 
 static struct resource data_resource = {
 	.name	= "Kernel data",
@@ -497,6 +501,7 @@ early_console_setup (char *cmdline)
 static void __init
 screen_info_setup(void)
 {
+#ifdef CONFIG_VGA_CONSOLE
 	unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
 
 	memset(&screen_info, 0, sizeof(screen_info));
@@ -525,6 +530,7 @@ screen_info_setup(void)
 	screen_info.orig_video_mode = 3;	/* XXX fake */
 	screen_info.orig_video_isVGA = 1;	/* XXX fake */
 	screen_info.orig_video_ega_bx = 3;	/* XXX fake */
+#endif
 }
 
 static inline void
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 95e6b579dfdd1..77e7a3722caa6 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -57,7 +57,9 @@
 #define SMBIOS_CORE_PACKAGE_OFFSET	0x23
 #define LOONGSON_EFI_ENABLE		(1 << 3)
 
+#ifdef CONFIG_EFI
 struct screen_info screen_info __section(".data");
+#endif
 
 unsigned long fw_arg0, fw_arg1, fw_arg2;
 DEFINE_PER_CPU(unsigned long, kernelsp);
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index cb871eb784a7c..1aba7dc95132c 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -54,7 +54,7 @@ struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
 
 EXPORT_SYMBOL(cpu_data);
 
-#ifdef CONFIG_VT
+#ifdef CONFIG_VGA_CONSOLE
 struct screen_info screen_info;
 #endif
 
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 76683993cdd3a..37df504d3ecbb 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -129,7 +129,7 @@ void __init plat_mem_setup(void)
 	if (m41t81_probe())
 		swarm_rtc_type = RTC_M41T81;
 
-#ifdef CONFIG_VT
+#ifdef CONFIG_VGA_CONSOLE
 	screen_info = (struct screen_info) {
 		.orig_video_page	= 52,
 		.orig_video_mode	= 3,
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index efad85c8c823b..9984cf91be7d0 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -38,7 +38,7 @@ extern void sni_machine_power_off(void);
 
 static void __init sni_display_setup(void)
 {
-#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
+#if defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
 	struct screen_info *si = &screen_info;
 	DISPLAY_STATUS *di;
 
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 971fe776e2f8b..a3dbe13f45fb3 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -39,15 +39,8 @@
 
 #include "head.h"
 
-#if defined(CONFIG_DUMMY_CONSOLE) || defined(CONFIG_EFI)
-struct screen_info screen_info __section(".data") = {
-	.orig_video_lines	= 30,
-	.orig_video_cols	= 80,
-	.orig_video_mode	= 0,
-	.orig_video_ega_bx	= 0,
-	.orig_video_isVGA	= 1,
-	.orig_video_points	= 8
-};
+#if defined(CONFIG_EFI)
+struct screen_info screen_info __section(".data");
 #endif
 
 /*
-- 
2.39.2


^ permalink raw reply related

* [PATCH v2 1/9] vgacon: rework Kconfig dependencies
From: Arnd Bergmann @ 2023-07-19 12:39 UTC (permalink / raw)
  To: linux-fbdev, Thomas Zimmermann, Helge Deller,
	Javier Martinez Canillas
  Cc: Arnd Bergmann, David S. Miller, K. Y. Srinivasan, Ard Biesheuvel,
	Borislav Petkov, Brian Cain, Catalin Marinas, Christophe Leroy,
	Daniel Vetter, Dave Hansen, David Airlie, Deepak Rawat,
	Dexuan Cui, Dinh Nguyen, Greg Kroah-Hartman, Guo Ren,
	Haiyang Zhang, Huacai Chen, Ingo Molnar,
	John Paul Adrian Glaubitz, Khalid Aziz, Linus Walleij,
	Matt Turner, Max Filippov, Michael Ellerman, Nicholas Piggin,
	Palmer Dabbelt, Russell King, Thomas Bogendoerfer,
	Thomas Gleixner, WANG Xuerui, Wei Liu, Will Deacon, x86,
	linux-alpha, linux-kernel, linux-arm-kernel, linux-efi,
	linux-csky, linux-hexagon, linux-ia64, loongarch, linux-mips,
	linuxppc-dev, linux-riscv, linux-sh, sparclinux, linux-hyperv,
	dri-devel
In-Reply-To: <20230719123944.3438363-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

The list of dependencies here is phrased as an opt-out, but this is missing
a lot of architectures that don't actually support VGA consoles, and some
of the entries are stale:

 - powerpc used to support VGA consoles in the old arch/ppc codebase, but
   the merged arch/powerpc never did

 - arm lists footbridge, integrator and netwinder, but netwinder is actually
   part of footbridge, and integrator does not appear to have an actual
   VGA hardware, or list it in its ATAG or DT.

 - mips has a few platforms (malta, sibyte, and sni) that initialize
   screen_info, on everything else the console is selected but cannot
   actually work.

 - csky, hexgagon, loongarch, nios2, riscv and xtensa are not listed
   in the opt-out table and declare a screen_info to allow building
   vga_con, but this cannot work because the console is never selected.

Replace this with an opt-in table that lists only the platforms that
remain. This is effectively x86, plus a couple of historic workstation
and server machines that reused parts of the x86 system architecture.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/video/console/Kconfig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 1b5a319971ed0..6af90db6d2da9 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -7,9 +7,9 @@ menu "Console display driver support"
 
 config VGA_CONSOLE
 	bool "VGA text console" if EXPERT || !X86
-	depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC &&  !SUPERH && \
-		(!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
-		!ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !S390 && !UML
+	depends on ALPHA || IA64 || X86 || \
+		(ARM && ARCH_FOOTBRIDGE) || \
+		(MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
 	select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
 	default y
 	help
-- 
2.39.2


^ permalink raw reply related

* [PATCH v2 0/9] video: screen_info cleanups
From: Arnd Bergmann @ 2023-07-19 12:39 UTC (permalink / raw)
  To: linux-fbdev, Thomas Zimmermann, Helge Deller,
	Javier Martinez Canillas
  Cc: Arnd Bergmann, David S. Miller, K. Y. Srinivasan, Ard Biesheuvel,
	Borislav Petkov, Brian Cain, Catalin Marinas, Christophe Leroy,
	Daniel Vetter, Dave Hansen, David Airlie, Deepak Rawat,
	Dexuan Cui, Dinh Nguyen, Greg Kroah-Hartman, Guo Ren,
	Haiyang Zhang, Huacai Chen, Ingo Molnar,
	John Paul Adrian Glaubitz, Khalid Aziz, Linus Walleij,
	Matt Turner, Max Filippov, Michael Ellerman, Nicholas Piggin,
	Palmer Dabbelt, Russell King, Thomas Bogendoerfer,
	Thomas Gleixner, WANG Xuerui, Wei Liu, Will Deacon, x86,
	linux-alpha, linux-kernel, linux-arm-kernel, linux-efi,
	linux-csky, linux-hexagon, linux-ia64, loongarch, linux-mips,
	linuxppc-dev, linux-riscv, linux-sh, sparclinux, linux-hyperv,
	dri-devel

From: Arnd Bergmann <arnd@arndb.de>

I refreshed the first four patches that I sent before with very minor
updates, and then added some more to further disaggregate the use
of screen_info:

 - I found that powerpc wasn't using vga16fb any more

 - vgacon can be almost entirely separated from the global
   screen_info, except on x86

 - similarly, the EFI framebuffer initialization can be
   kept separate, except on x86.

I did extensive build testing on arm/arm64/x86 and the normal built bot
testing for the other architectures.

Which tree should this get merged through?

Link: https://lore.kernel.org/lkml/20230707095415.1449376-1-arnd@kernel.org/

Arnd Bergmann (9):
  vgacon: rework Kconfig dependencies
  vgacon: rework screen_info #ifdef checks
  dummycon: limit Arm console size hack to footbridge
  vgacon, arch/*: remove unused screen_info definitions
  vgacon: remove screen_info dependency
  vgacon: clean up global screen_info instances
  vga16fb: drop powerpc support
  hyperv: avoid dependency on screen_info
  efi: move screen_info into efi init code

 arch/alpha/kernel/proto.h                     |  2 +
 arch/alpha/kernel/setup.c                     |  8 +--
 arch/alpha/kernel/sys_sio.c                   |  8 ++-
 arch/arm/include/asm/setup.h                  |  5 ++
 arch/arm/kernel/atags_parse.c                 | 20 +++---
 arch/arm/kernel/efi.c                         |  6 --
 arch/arm/kernel/setup.c                       |  7 +-
 arch/arm64/kernel/efi.c                       |  4 --
 arch/arm64/kernel/image-vars.h                |  2 +
 arch/csky/kernel/setup.c                      | 12 ----
 arch/hexagon/kernel/Makefile                  |  2 -
 arch/hexagon/kernel/screen_info.c             |  3 -
 arch/ia64/kernel/setup.c                      | 51 +++++++-------
 arch/loongarch/kernel/efi.c                   |  3 +-
 arch/loongarch/kernel/image-vars.h            |  2 +
 arch/loongarch/kernel/setup.c                 |  3 -
 arch/mips/jazz/setup.c                        |  9 ---
 arch/mips/kernel/setup.c                      | 11 ---
 arch/mips/mti-malta/malta-setup.c             |  4 +-
 arch/mips/sibyte/swarm/setup.c                | 26 ++++---
 arch/mips/sni/setup.c                         | 18 ++---
 arch/nios2/kernel/setup.c                     |  5 --
 arch/powerpc/kernel/setup-common.c            | 16 -----
 arch/riscv/kernel/setup.c                     | 12 ----
 arch/sh/kernel/setup.c                        |  5 --
 arch/sparc/kernel/setup_32.c                  | 13 ----
 arch/sparc/kernel/setup_64.c                  | 13 ----
 arch/x86/kernel/setup.c                       |  2 +-
 arch/xtensa/kernel/setup.c                    | 12 ----
 drivers/firmware/efi/efi-init.c               | 14 +++-
 drivers/firmware/efi/libstub/efi-stub-entry.c |  8 ++-
 drivers/firmware/pcdp.c                       |  1 -
 drivers/gpu/drm/hyperv/hyperv_drm_drv.c       |  7 +-
 drivers/hv/vmbus_drv.c                        |  6 +-
 drivers/video/console/Kconfig                 | 11 +--
 drivers/video/console/dummycon.c              |  2 +-
 drivers/video/console/vgacon.c                | 68 +++++++++++--------
 drivers/video/fbdev/Kconfig                   |  2 +-
 drivers/video/fbdev/hyperv_fb.c               |  8 +--
 drivers/video/fbdev/vga16fb.c                 |  9 +--
 include/linux/console.h                       |  7 ++
 41 files changed, 178 insertions(+), 249 deletions(-)
 delete mode 100644 arch/hexagon/kernel/screen_info.c

-- 
2.39.2

Cc: "David S. Miller" <davem@davemloft.net>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Deepak Rawat <drawat.floss@gmail.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Khalid Aziz <khalid@gonehiking.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: x86@kernel.org
Cc: linux-alpha@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Cc: linux-csky@vger.kernel.org
Cc: linux-hexagon@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: loongarch@lists.linux.dev
Cc: linux-mips@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-sh@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Cc: linux-hyperv@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org


^ permalink raw reply

* Re: [PATCH 07/12] arch/x86: Declare edid_info in <asm/screen_info.h>
From: Arnd Bergmann @ 2023-07-18 14:47 UTC (permalink / raw)
  To: Thomas Zimmermann, Helge Deller, Daniel Vetter, Dave Airlie
  Cc: linux-hyperv, linux-efi, linux-ia64, linux-sh, Peter Zijlstra,
	Dave Hansen, linux-fbdev, dri-devel, linux-mips, H. Peter Anvin,
	sparclinux, linux-riscv, Ard Biesheuvel, Linux-Arch,
	linux-hexagon, linux-staging, linux-csky@vger.kernel.org,
	Ingo Molnar, Sami Tolvanen, Kees Cook, Paul E. McKenney,
	Frederic Weisbecker, Nicholas Piggin, Borislav Petkov, loongarch,
	Thomas Gleixner, linux-arm-kernel, x86, linux-kernel,
	Juerg Haefliger, linux-alpha, Andrew Morton, linuxppc-dev
In-Reply-To: <150c0fa2-bff2-0644-d6e5-c4dab7f79048@suse.de>

On Wed, Jul 5, 2023, at 10:18, Thomas Zimmermann wrote:
> Am 30.06.23 um 13:53 schrieb Arnd Bergmann:
>> On Fri, Jun 30, 2023, at 09:46, Thomas Zimmermann wrote:
>>> Am 29.06.23 um 15:21 schrieb Arnd Bergmann:
>> 
>> I definitely get it for the screen_info, which needs the complexity.
>> For ARCHARCH_HAS_EDID_INFO I would hope that it's never selected by
>> anything other than x86, so I would still go with just a dependency
>> on x86 for simplicity, but I don't mind having the extra symbol if that
>> keeps it more consistent with how the screen_info is handled.
>
> Well, I'd like to add edid_info to platforms with EFI. What would be 
> arm/arm64 and loongarch, I guess. See below for the future plans.

To be clear: I don't mind using a 'struct edid_info' being passed
around between subsystems, that is clearly an improvement over
'struct screen_info'. It's the global variable that seems like
an artifact of linux-2.4 days, and I think we can do better than that.

>>>> I suppose you could use FIRMWARE_EDID on EFI or OF systems without
>>>> the need for a global edid_info structure, but that would not
>>>> share any code with the current fb_firmware_edid() function.
>>>
>>> The current code is build on top of screen_info and edid_info. I'd
>>> preferably not replace that, if possible.
>> 
>> One way I could imagine this looking in the end would be
>> something like
>> 
>> struct screen_info *fb_screen_info(struct device *dev)
>> {
>>        struct screen_info *si = NULL;
>> 
>>        if (IS_ENABLED(CONFIG_EFI))
>>              si = efi_get_screen_info(dev);
>> 
>>        if (IS_ENABLED(CONFIG_ARCH_HAS_SCREEN_INFO) && !si)
>>              si = screen_info;
>> 
>>        return si;
>> }
>> 
>> corresponding to fb_firmware_edid(). With this, any driver
>> that wants to access screen_info would call this function
>> instead of using the global pointer, plus either NULL pointer
>> check or a CONFIG_ARCH_HAS_SCREEN_INFO dependency.
>> 
>> This way we could completely eliminate the global screen_info
>> on arm64, riscv, and loongarch but still use the efi and
>> hyperv framebuffer/drm drivers.
>
> If possible, I'd like to remove global screen_info and edid_info 
> entirely from fbdev and the various consoles.

ok

> We currently use screen_info to set up the generic framebuffer device in 
> drivers/firmware/sysfb.c. I'd like to use edid_info here as well, so 
> that the generic graphics drivers can get EDID information.
>
> For the few fbdev drivers and consoles that require the global 
> screen_info/edid_info, I'd rather provide lookup functions in sysfb 
> (e.g., sysfb_get_screen_info(), sysfb_get_edid_info()). The global 
> screen_info/edid_info state would then become an internal artifact of 
> the sysfb code.
>
> Hopefully that explains some of the decisions made in this patchset.

I spent some more time looking at the screen_info side, after my
first set of patches to refine the #ifdefs, and I think we don't
even need to make screen_info available to non-x86 drivers at all:

- All the vgacon users except for x86 can just register a static
  screen_info (or simplified into a simpler structure) with the
  driver itself. This even includes ia64, which does not support
  EFI framebuffers.

- The VESA, vga16, SIS, Intel and HyperV framebuffer drivers only
  need access to screen_info on x86. HyperV is the only driver that
  can currently access the data from EFI firmware on arm64, but
  that is only used for 'gen 1' guests, which I'm pretty sure
  only exist on x86.

- All the other references to screen_info are specific to EFI
  firmware, so we can move the global definition from arm,
  arm64, loongarch, riscv and ia64 into the EFI firmware
  code itself. It is still accessed by efifb and efi-earlycon
  at this point.

I have uploaded version 2 of my series to
https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/log/?h=screen-info-v2
and will send it out after I get the green light from build
bots. 

       Arnd

^ permalink raw reply

* Re: [PATCH v4 11/18] media: Remove flag FBINFO_FLAG_DEFAULT from fbdev drivers
From: Hans Verkuil @ 2023-07-18 10:58 UTC (permalink / raw)
  To: Thomas Zimmermann, deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Sam Ravnborg, Andy Walls, Mauro Carvalho Chehab
In-Reply-To: <20230715185343.7193-12-tzimmermann@suse.de>

Hi Thomas,

On 15/07/2023 20:51, Thomas Zimmermann wrote:
> The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
> fbinfo.flags has been allocated to zero by kzalloc(). So do not
> set it.
> 
> Flags should signal differences from the default values. After cleaning
> up all occurrences of FBINFO_DEFAULT, the token will be removed.
> 
> v2:
> 	* fix commit message (Miguel)
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Acked-by: Sam Ravnborg <sam@ravnborg.org>
> Cc: Andy Walls <awalls@md.metrocast.net>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: Hans Verkuil <hverkuil@xs4all.nl>
> ---
>  drivers/media/pci/ivtv/ivtvfb.c              | 1 -
>  drivers/media/test-drivers/vivid/vivid-osd.c | 1 -
>  2 files changed, 2 deletions(-)

I can take this patches for 6.6, unless you prefer to have this whole series
merged in one go?

In that case you can use my:

Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Regards,

	Hans

> 
> diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c
> index 0aeb9daaee4c..23c8c094e791 100644
> --- a/drivers/media/pci/ivtv/ivtvfb.c
> +++ b/drivers/media/pci/ivtv/ivtvfb.c
> @@ -1048,7 +1048,6 @@ static int ivtvfb_init_vidmode(struct ivtv *itv)
>  	/* Generate valid fb_info */
>  
>  	oi->ivtvfb_info.node = -1;
> -	oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
>  	oi->ivtvfb_info.par = itv;
>  	oi->ivtvfb_info.var = oi->ivtvfb_defined;
>  	oi->ivtvfb_info.fix = oi->ivtvfb_fix;
> diff --git a/drivers/media/test-drivers/vivid/vivid-osd.c b/drivers/media/test-drivers/vivid/vivid-osd.c
> index ec25edc679b3..051f1805a16d 100644
> --- a/drivers/media/test-drivers/vivid/vivid-osd.c
> +++ b/drivers/media/test-drivers/vivid/vivid-osd.c
> @@ -310,7 +310,6 @@ static int vivid_fb_init_vidmode(struct vivid_dev *dev)
>  	/* Generate valid fb_info */
>  
>  	dev->fb_info.node = -1;
> -	dev->fb_info.flags = FBINFO_FLAG_DEFAULT;
>  	dev->fb_info.par = dev;
>  	dev->fb_info.var = dev->fb_defined;
>  	dev->fb_info.fix = dev->fb_fix;


^ permalink raw reply

* Re: [PATCH v9 01/42] mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma()
From: Mark Brown @ 2023-07-17 16:51 UTC (permalink / raw)
  To: Edgecombe, Rick P
  Cc: Schimpe, Christina, Yang, Weijiang, hjl.tools@gmail.com,
	x86@kernel.org, monstr@monstr.eu, rppt@kernel.org,
	dave.hansen@linux.intel.com, linux-snps-arc@lists.infradead.org,
	Torvalds, Linus, kirill.shutemov@linux.intel.com,
	linux-api@vger.kernel.org, dinguyen@kernel.org,
	rdunlap@infradead.org, tglx@linutronix.de,
	sparclinux@vger.kernel.org, arnd@arndb.de,
	linux-ia64@vger.kernel.org, Lutomirski, Andy,
	szabolcs.nagy@arm.com, linux-kernel@vger.kernel.org,
	linux-parisc@vger.kernel.org, akpm@linux-foundation.org,
	pavel@ucw.cz, keescook@chromium.org,
	linuxppc-dev@lists.ozlabs.org, gorcunov@gmail.com,
	andrew.cooper3@citrix.com, david@redhat.com, hpa@zytor.com,
	loongarch@lists.linux.dev, peterz@infradead.org,
	linux-sh@vger.kernel.org, nadav.amit@gmail.com,
	linux-m68k@lists.linux-m68k.org, linux-doc@vger.kernel.org,
	openrisc@lists.librecores.org, jamorris@linux.microsoft.com,
	mike.kravetz@oracle.com, debug@rivosinc.com, fweimer@redhat.com,
	kcc@google.com, linux-arch@vger.kernel.org, mingo@redhat.com,
	linux-csky@vger.kernel.org, linux-mips@vger.kernel.org,
	john.allen@amd.com, Eranian, Stephane, bsingharora@gmail.com,
	linux-alpha@vger.kernel.org, linux-s390@vger.kernel.org,
	linux-riscv@lists.infradead.org, linux-um@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	torvalds@linuxfoundation.org, bp@alien8.de, corbet@lwn.net,
	linux-hexagon@vger.kernel.org, dethoma@microsoft.com,
	jannh@google.com, Syromiatnikov, Eugene, oleg@redhat.com,
	linux-mm@kvack.org
In-Reply-To: <87acbb49fa83b0e3f261315a531e105da9e5b9d6.camel@intel.com>

[-- Attachment #1: Type: text/plain, Size: 793 bytes --]

On Mon, Jul 17, 2023 at 03:55:50PM +0000, Edgecombe, Rick P wrote:
> On Fri, 2023-07-14 at 23:57 +0100, Mark Brown wrote:

> > The same issue seems to apply with the version that was in -next
> > based
> > on v6.4-rc4 too.

> The version in your branch is not the same as the version in tip (which
> had a squashed build fix). I was able to reproduce the build error with
> your branch. But not with the one in tip rebased on v6.5-rc1. So can
> you try this version:
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/shstk&id=899223d69ce9f338056f4c41ef870d70040fc860

Ah, I'd not seen that patch or that tip had been rebased - I'd actually
been using literally the branch from tip as my base at whatever point I
last noticed it changing up until I rebased onto -rc1.

[-- Attachment #2: signature.asc --]
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^ permalink raw reply

* Re: [PATCH v9 01/42] mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma()
From: Edgecombe, Rick P @ 2023-07-17 15:55 UTC (permalink / raw)
  To: broonie@kernel.org
  Cc: Schimpe, Christina, Yang, Weijiang, hjl.tools@gmail.com,
	x86@kernel.org, monstr@monstr.eu, rppt@kernel.org,
	dave.hansen@linux.intel.com, linux-snps-arc@lists.infradead.org,
	Torvalds, Linus, kirill.shutemov@linux.intel.com,
	linux-api@vger.kernel.org, dinguyen@kernel.org,
	rdunlap@infradead.org, tglx@linutronix.de,
	sparclinux@vger.kernel.org, arnd@arndb.de,
	linux-ia64@vger.kernel.org, Lutomirski, Andy,
	szabolcs.nagy@arm.com, linux-kernel@vger.kernel.org,
	linux-parisc@vger.kernel.org, akpm@linux-foundation.org,
	pavel@ucw.cz, keescook@chromium.org,
	linuxppc-dev@lists.ozlabs.org, gorcunov@gmail.com,
	andrew.cooper3@citrix.com, david@redhat.com, hpa@zytor.com,
	loongarch@lists.linux.dev, peterz@infradead.org,
	linux-sh@vger.kernel.org, nadav.amit@gmail.com,
	linux-m68k@lists.linux-m68k.org, linux-doc@vger.kernel.org,
	openrisc@lists.librecores.org, jamorris@linux.microsoft.com,
	mike.kravetz@oracle.com, debug@rivosinc.com, fweimer@redhat.com,
	kcc@google.com, linux-arch@vger.kernel.org, mingo@redhat.com,
	linux-csky@vger.kernel.org, linux-mips@vger.kernel.org,
	john.allen@amd.com, Eranian, Stephane, bsingharora@gmail.com,
	linux-alpha@vger.kernel.org, linux-s390@vger.kernel.org,
	linux-riscv@lists.infradead.org, linux-um@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	torvalds@linuxfoundation.org, bp@alien8.de, corbet@lwn.net,
	linux-hexagon@vger.kernel.org, dethoma@microsoft.com,
	jannh@google.com, Syromiatnikov, Eugene, oleg@redhat.com,
	linux-mm@kvack.org
In-Reply-To: <b389274a-abed-40dc-8e33-7ce922ea9b61@sirena.org.uk>

On Fri, 2023-07-14 at 23:57 +0100, Mark Brown wrote:
> On Mon, Jun 12, 2023 at 05:10:27PM -0700, Rick Edgecombe wrote:
> > The x86 Shadow stack feature includes a new type of memory called
> > shadow
> > stack. This shadow stack memory has some unusual properties, which
> > requires
> > some core mm changes to function properly.
> 
> This seems to break sparc64_defconfig when applied on top of v6.5-
> rc1:
> 
> In file included from /home/broonie/git/bisect/include/linux/mm.h:29,
>                  from /home/broonie/git/bisect/net/core/skbuff.c:40:
> /home/broonie/git/bisect/include/linux/pgtable.h: In function
> 'pmd_mkwrite':
> /home/broonie/git/bisect/include/linux/pgtable.h:528:9: error:
> implicit declaration of function 'pmd_mkwrite_novma'; did you mean
> 'pte_mkwrite_novma'? [-Werror=implicit-function-declaration]
>   return pmd_mkwrite_novma(pmd);
>          ^~~~~~~~~~~~~~~~~
>          pte_mkwrite_novma
> /home/broonie/git/bisect/include/linux/pgtable.h:528:9: error:
> incompatible types when returning type 'int' but 'pmd_t' {aka 'struct
> <anonymous>'} was expected
>   return pmd_mkwrite_novma(pmd);
>          ^~~~~~~~~~~~~~~~~~~~~~
> 
> The same issue seems to apply with the version that was in -next
> based
> on v6.4-rc4 too.

The version in your branch is not the same as the version in tip (which
had a squashed build fix). I was able to reproduce the build error with
your branch. But not with the one in tip rebased on v6.5-rc1. So can
you try this version:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/shstk&id=899223d69ce9f338056f4c41ef870d70040fc860



^ permalink raw reply

* Re: [PATCH v4 12/18] staging: Remove flag FBINFO_FLAG_DEFAULT from fbdev drivers
From: Greg Kroah-Hartman @ 2023-07-16  5:39 UTC (permalink / raw)
  To: Thomas Zimmermann
  Cc: deller, javierm, geert, dan.carpenter, linux-sh, dri-devel,
	linux-kernel, amd-gfx, linux-input, linux-media, linux-fbdev,
	linux-staging, linux-arm-kernel, linux-geode, linux-hyperv,
	linux-omap, linuxppc-dev, kvm, Sam Ravnborg, Sudip Mukherjee,
	Teddy Wang
In-Reply-To: <20230715185343.7193-13-tzimmermann@suse.de>

On Sat, Jul 15, 2023 at 08:51:54PM +0200, Thomas Zimmermann wrote:
> The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
> fbinfo.flags has been allocated to zero by framebuffer_alloc(). So do
> not set it.
> 
> Flags should signal differences from the default values. After cleaning
> up all occurrences of FBINFO_DEFAULT, the token will be removed.
> 
> v2:
> 	* fix commit message (Miguel)
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Acked-by: Sam Ravnborg <sam@ravnborg.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
> Cc: Teddy Wang <teddy.wang@siliconmotion.com>

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

^ permalink raw reply

* [PATCH v4 13/18] fbdev: Remove FBINFO_FLAG_DEFAULT from kzalloc()'ed structs
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by kzalloc(). So do not
set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/amba-clcd.c             | 1 -
 drivers/video/fbdev/matrox/matroxfb_crtc2.c | 5 ++---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c
index e45338227be6..24d89e6fb780 100644
--- a/drivers/video/fbdev/amba-clcd.c
+++ b/drivers/video/fbdev/amba-clcd.c
@@ -461,7 +461,6 @@ static int clcdfb_register(struct clcd_fb *fb)
 	}
 
 	fb->fb.fbops		= &clcdfb_ops;
-	fb->fb.flags		= FBINFO_FLAG_DEFAULT;
 	fb->fb.pseudo_palette	= fb->cmap;
 
 	strncpy(fb->fb.fix.id, clcd_name, sizeof(fb->fb.fix.id));
diff --git a/drivers/video/fbdev/matrox/matroxfb_crtc2.c b/drivers/video/fbdev/matrox/matroxfb_crtc2.c
index 7655afa3fd50..372197c124de 100644
--- a/drivers/video/fbdev/matrox/matroxfb_crtc2.c
+++ b/drivers/video/fbdev/matrox/matroxfb_crtc2.c
@@ -603,9 +603,8 @@ static int matroxfb_dh_regit(const struct matrox_fb_info *minfo,
 	void* oldcrtc2;
 
 	m2info->fbcon.fbops = &matroxfb_dh_ops;
-	m2info->fbcon.flags = FBINFO_FLAG_DEFAULT;
-	m2info->fbcon.flags |= FBINFO_HWACCEL_XPAN |
-			       FBINFO_HWACCEL_YPAN;
+	m2info->fbcon.flags = FBINFO_HWACCEL_XPAN |
+			      FBINFO_HWACCEL_YPAN;
 	m2info->fbcon.pseudo_palette = m2info->cmap;
 	fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1);
 
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 09/18] auxdisplay: Remove flag FBINFO_FLAG_DEFAULT from fbdev drivers
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Miguel Ojeda,
	Robin van der Gracht
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by framebuffer_alloc(). So do
not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Robin van der Gracht <robin@protonic.nl>
---
 drivers/auxdisplay/cfag12864bfb.c | 1 -
 drivers/auxdisplay/ht16k33.c      | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/auxdisplay/cfag12864bfb.c b/drivers/auxdisplay/cfag12864bfb.c
index c2cab7e2b126..729845bcc803 100644
--- a/drivers/auxdisplay/cfag12864bfb.c
+++ b/drivers/auxdisplay/cfag12864bfb.c
@@ -79,7 +79,6 @@ static int cfag12864bfb_probe(struct platform_device *device)
 	info->var = cfag12864bfb_var;
 	info->pseudo_palette = NULL;
 	info->par = NULL;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	if (register_framebuffer(info) < 0)
 		goto fballoced;
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index edaf92b7ea77..df3f37651e45 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -646,7 +646,6 @@ static int ht16k33_fbdev_probe(struct device *dev, struct ht16k33_priv *priv,
 	fbdev->info->var = ht16k33_fb_var;
 	fbdev->info->bl_dev = bl;
 	fbdev->info->pseudo_palette = NULL;
-	fbdev->info->flags = FBINFO_FLAG_DEFAULT;
 	fbdev->info->par = priv;
 
 	err = register_framebuffer(fbdev->info);
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 08/18] sh: mach-sh7763rdp: Assign FB_MODE_IS_UNKNOWN to struct fb_videomode.flag
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, John Paul Adrian Glaubitz,
	Yoshinori Sato, Rich Felker
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

Assign FB_MODE_IS_UNKNOWN to sh7763fb_videomode.flag instead of
FBINFO_FLAG_DEFAULT. Both are 0, so the stored value does not change.

FBINFO_FLAG_DEFAULT is a flag for a framebuffer in struct fb_info.
Flags for videomodes are prefixed with FB_MODE_.

v3:
	* include board name in commit message (Adrian)
v2:
	* assign FB_MODE_IS_UNKNOWN (Adrian)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
---
 arch/sh/boards/mach-sh7763rdp/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/boards/mach-sh7763rdp/setup.c b/arch/sh/boards/mach-sh7763rdp/setup.c
index 97e715e4e9b3..e25193001ea0 100644
--- a/arch/sh/boards/mach-sh7763rdp/setup.c
+++ b/arch/sh/boards/mach-sh7763rdp/setup.c
@@ -119,7 +119,7 @@ static struct fb_videomode sh7763fb_videomode = {
 	.vsync_len = 1,
 	.sync = 0,
 	.vmode = FB_VMODE_NONINTERLACED,
-	.flag = FBINFO_FLAG_DEFAULT,
+	.flag = FB_MODE_IS_UNKNOWN,
 };
 
 static struct sh7760fb_platdata sh7763fb_def_pdata = {
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 18/18] fbdev: Document that framebuffer_alloc() returns zero'ed data
From: Thomas Zimmermann @ 2023-07-15 18:52 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Miguel Ojeda, Sui Jingfeng
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

Most fbdev drivers depend on framebuffer_alloc() to initialize the
allocated memory to 0. Document this guarantee.

v3:
	* slightly reword the sentence (Miguel)

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/core/fb_info.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/core/fb_info.c b/drivers/video/fbdev/core/fb_info.c
index 8bdbefdd4b70..4847ebe50d7d 100644
--- a/drivers/video/fbdev/core/fb_info.c
+++ b/drivers/video/fbdev/core/fb_info.c
@@ -13,7 +13,8 @@
  *
  * Creates a new frame buffer info structure. Also reserves @size bytes
  * for driver private data (info->par). info->par (if any) will be
- * aligned to sizeof(long).
+ * aligned to sizeof(long). The new instances of struct fb_info and
+ * the driver private data are both cleared to zero.
  *
  * Returns the new structure, or NULL if an error occurred.
  *
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 14/18] fbdev: Remove FBINFO_FLAG_DEFAULT from framebuffer_alloc()'ed structs
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Jaya Kumar, Peter Jones,
	Sascha Hauer, Pengutronix Kernel Team, Shawn Guo, Fabio Estevam,
	NXP Linux Team, Maik Broemme, Jingoo Han, Sudip Mukherjee,
	Teddy Wang, Michal Januszewski
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by framebuffer_alloc(). So
do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Jaya Kumar <jayalk@intworks.biz>
Cc: Helge Deller <deller@gmx.de>
Cc: Peter Jones <pjones@redhat.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Maik Broemme <mbroemme@libmpq.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
Cc: Michal Januszewski <spock@gentoo.org>
---
 drivers/video/fbdev/arcfb.c                    | 1 -
 drivers/video/fbdev/aty/aty128fb.c             | 1 -
 drivers/video/fbdev/broadsheetfb.c             | 2 +-
 drivers/video/fbdev/da8xx-fb.c                 | 1 -
 drivers/video/fbdev/efifb.c                    | 1 -
 drivers/video/fbdev/goldfishfb.c               | 1 -
 drivers/video/fbdev/gxt4500.c                  | 3 +--
 drivers/video/fbdev/hecubafb.c                 | 2 +-
 drivers/video/fbdev/imxfb.c                    | 3 +--
 drivers/video/fbdev/intelfb/intelfbdrv.c       | 1 -
 drivers/video/fbdev/metronomefb.c              | 2 +-
 drivers/video/fbdev/mx3fb.c                    | 1 -
 drivers/video/fbdev/omap/omapfb_main.c         | 1 -
 drivers/video/fbdev/omap2/omapfb/omapfb-main.c | 1 -
 drivers/video/fbdev/s3c-fb.c                   | 1 -
 drivers/video/fbdev/sh_mobile_lcdcfb.c         | 2 --
 drivers/video/fbdev/sis/sis_main.c             | 2 --
 drivers/video/fbdev/sm501fb.c                  | 2 +-
 drivers/video/fbdev/sm712fb.c                  | 1 -
 drivers/video/fbdev/uvesafb.c                  | 3 +--
 drivers/video/fbdev/vesafb.c                   | 2 +-
 drivers/video/fbdev/vfb.c                      | 1 -
 drivers/video/fbdev/vga16fb.c                  | 2 +-
 drivers/video/fbdev/xen-fbfront.c              | 2 +-
 24 files changed, 10 insertions(+), 29 deletions(-)

diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c
index 9aaea3be8281..cff11cb04a55 100644
--- a/drivers/video/fbdev/arcfb.c
+++ b/drivers/video/fbdev/arcfb.c
@@ -546,7 +546,6 @@ static int arcfb_probe(struct platform_device *dev)
 	par->c2io_addr = c2io_addr;
 	par->cslut[0] = 0x00;
 	par->cslut[1] = 0x06;
-	info->flags = FBINFO_FLAG_DEFAULT;
 	spin_lock_init(&par->lock);
 	if (irq) {
 		par->irq = irq;
diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index 2d9320a52e51..b44fc78ccd4f 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -1927,7 +1927,6 @@ static int aty128_init(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	/* fill in info */
 	info->fbops = &aty128fb_ops;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	par->lcd_on = default_lcd_on;
 	par->crt_on = default_crt_on;
diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c
index cb725a91b6bb..e51e14c29c55 100644
--- a/drivers/video/fbdev/broadsheetfb.c
+++ b/drivers/video/fbdev/broadsheetfb.c
@@ -1069,7 +1069,7 @@ static int broadsheetfb_probe(struct platform_device *dev)
 
 	mutex_init(&par->io_lock);
 
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+	info->flags = FBINFO_VIRTFB;
 
 	info->fbdefio = &broadsheetfb_defio;
 	fb_deferred_io_init(info);
diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c
index 60cd1286370f..988dedcf6be8 100644
--- a/drivers/video/fbdev/da8xx-fb.c
+++ b/drivers/video/fbdev/da8xx-fb.c
@@ -1463,7 +1463,6 @@ static int fb_probe(struct platform_device *device)
 	da8xx_fb_var.bits_per_pixel = lcd_cfg->bpp;
 
 	/* Initialize fbinfo */
-	da8xx_fb_info->flags = FBINFO_FLAG_DEFAULT;
 	da8xx_fb_info->fix = da8xx_fb_fix;
 	da8xx_fb_info->var = da8xx_fb_var;
 	da8xx_fb_info->fbops = &da8xx_fb_ops;
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 3d7be69ab593..3391c8e84210 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -555,7 +555,6 @@ static int efifb_probe(struct platform_device *dev)
 	info->fbops = &efifb_ops;
 	info->var = efifb_defined;
 	info->fix = efifb_fix;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	orientation = drm_get_panel_orientation_quirk(efifb_defined.xres,
 						      efifb_defined.yres);
diff --git a/drivers/video/fbdev/goldfishfb.c b/drivers/video/fbdev/goldfishfb.c
index 6fa2108fd912..ef2528c3faa9 100644
--- a/drivers/video/fbdev/goldfishfb.c
+++ b/drivers/video/fbdev/goldfishfb.c
@@ -212,7 +212,6 @@ static int goldfish_fb_probe(struct platform_device *pdev)
 	height = readl(fb->reg_base + FB_GET_HEIGHT);
 
 	fb->fb.fbops		= &goldfish_fb_ops;
-	fb->fb.flags		= FBINFO_FLAG_DEFAULT;
 	fb->fb.pseudo_palette	= fb->cmap;
 	fb->fb.fix.type		= FB_TYPE_PACKED_PIXELS;
 	fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
diff --git a/drivers/video/fbdev/gxt4500.c b/drivers/video/fbdev/gxt4500.c
index 5f42d3d9d6ce..8d0976578ddf 100644
--- a/drivers/video/fbdev/gxt4500.c
+++ b/drivers/video/fbdev/gxt4500.c
@@ -690,8 +690,7 @@ static int gxt4500_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 #endif
 
 	info->fbops = &gxt4500_ops;
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_HWACCEL_XPAN |
-					    FBINFO_HWACCEL_YPAN;
+	info->flags = FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
 
 	err = fb_alloc_cmap(&info->cmap, 256, 0);
 	if (err) {
diff --git a/drivers/video/fbdev/hecubafb.c b/drivers/video/fbdev/hecubafb.c
index 5043d08ade54..c4938554ea45 100644
--- a/drivers/video/fbdev/hecubafb.c
+++ b/drivers/video/fbdev/hecubafb.c
@@ -189,7 +189,7 @@ static int hecubafb_probe(struct platform_device *dev)
 	par->send_command = apollo_send_command;
 	par->send_data = apollo_send_data;
 
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+	info->flags = FBINFO_VIRTFB;
 
 	info->fbdefio = &hecubafb_defio;
 	fb_deferred_io_init(info);
diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index adf36690c342..5b1ddce1f9d3 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -698,8 +698,7 @@ static int imxfb_init_fbinfo(struct platform_device *pdev)
 	info->var.vmode			= FB_VMODE_NONINTERLACED;
 
 	info->fbops			= &imxfb_ops;
-	info->flags			= FBINFO_FLAG_DEFAULT |
-					  FBINFO_READS_FAST;
+	info->flags			= FBINFO_READS_FAST;
 
 	np = pdev->dev.of_node;
 	info->var.grayscale = of_property_read_bool(np,
diff --git a/drivers/video/fbdev/intelfb/intelfbdrv.c b/drivers/video/fbdev/intelfb/intelfbdrv.c
index 85a6341b8ac0..3d334f171959 100644
--- a/drivers/video/fbdev/intelfb/intelfbdrv.c
+++ b/drivers/video/fbdev/intelfb/intelfbdrv.c
@@ -1098,7 +1098,6 @@ static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
 
 	DBG_MSG("intelfb_set_fbinfo\n");
 
-	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &intel_fb_ops;
 	info->pseudo_palette = dinfo->pseudo_palette;
 
diff --git a/drivers/video/fbdev/metronomefb.c b/drivers/video/fbdev/metronomefb.c
index 667bef10738c..857e56fbb56f 100644
--- a/drivers/video/fbdev/metronomefb.c
+++ b/drivers/video/fbdev/metronomefb.c
@@ -642,7 +642,7 @@ static int metronomefb_probe(struct platform_device *dev)
 	if (retval < 0)
 		goto err_free_irq;
 
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+	info->flags = FBINFO_VIRTFB;
 
 	info->fbdefio = &metronomefb_defio;
 	fb_deferred_io_init(info);
diff --git a/drivers/video/fbdev/mx3fb.c b/drivers/video/fbdev/mx3fb.c
index 63c186e0364a..3a053005d2b9 100644
--- a/drivers/video/fbdev/mx3fb.c
+++ b/drivers/video/fbdev/mx3fb.c
@@ -1406,7 +1406,6 @@ static struct fb_info *mx3fb_init_fbinfo(struct device *dev,
 	fbi->var.activate	= FB_ACTIVATE_NOW;
 
 	fbi->fbops		= ops;
-	fbi->flags		= FBINFO_FLAG_DEFAULT;
 	fbi->pseudo_palette	= mx3fbi->pseudo_palette;
 
 	mutex_init(&mx3fbi->mutex);
diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c
index ad65554b33c3..783bbe026207 100644
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c
@@ -1451,7 +1451,6 @@ static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
 	int				r = 0;
 
 	info->fbops = &omapfb_ops;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	strscpy(fix->id, MODULE_NAME, sizeof(fix->id));
 
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
index c0538069eb48..b5acad8eb279 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
@@ -1732,7 +1732,6 @@ static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
 	int r = 0;
 
 	fbi->fbops = &omapfb_ops;
-	fbi->flags = FBINFO_FLAG_DEFAULT;
 	fbi->pseudo_palette = fbdev->pseudo_palette;
 
 	if (ofbi->region->size == 0) {
diff --git a/drivers/video/fbdev/s3c-fb.c b/drivers/video/fbdev/s3c-fb.c
index 1ce707e4cfd0..c50b92c06c5d 100644
--- a/drivers/video/fbdev/s3c-fb.c
+++ b/drivers/video/fbdev/s3c-fb.c
@@ -1244,7 +1244,6 @@ static int s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
 	fbinfo->var.vmode	= FB_VMODE_NONINTERLACED;
 	fbinfo->var.bits_per_pixel = windata->default_bpp;
 	fbinfo->fbops		= &s3c_fb_ops;
-	fbinfo->flags		= FBINFO_FLAG_DEFAULT;
 	fbinfo->pseudo_palette  = &win->pseudo_palette;
 
 	/* prepare to actually start the framebuffer */
diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c
index 093f035d1246..8f9bbbe77d8c 100644
--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
@@ -1565,7 +1565,6 @@ sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
 
 	ovl->info = info;
 
-	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &sh_mobile_lcdc_overlay_ops;
 	info->device = priv->dev;
 	info->screen_buffer = ovl->fb_mem;
@@ -2052,7 +2051,6 @@ sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
 
 	ch->info = info;
 
-	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &sh_mobile_lcdc_ops;
 	info->device = priv->dev;
 	info->screen_buffer = ch->fb_mem;
diff --git a/drivers/video/fbdev/sis/sis_main.c b/drivers/video/fbdev/sis/sis_main.c
index 2beb3512a853..0f5374f6ef05 100644
--- a/drivers/video/fbdev/sis/sis_main.c
+++ b/drivers/video/fbdev/sis/sis_main.c
@@ -6477,8 +6477,6 @@ error_3:	vfree(ivideo->bios_abase);
 				     FBINFO_HWACCEL_COPYAREA 	|
 				     FBINFO_HWACCEL_FILLRECT 	|
 				     ((ivideo->accel) ? 0 : FBINFO_HWACCEL_DISABLED);
-#else
-		sis_fb_info->flags = FBINFO_FLAG_DEFAULT;
 #endif
 		sis_fb_info->var = ivideo->default_var;
 		sis_fb_info->fix = ivideo->sisfb_fix;
diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
index 46951a095274..65c799ac5604 100644
--- a/drivers/video/fbdev/sm501fb.c
+++ b/drivers/video/fbdev/sm501fb.c
@@ -1731,7 +1731,7 @@ static int sm501fb_init_fb(struct fb_info *fb, enum sm501_controller head,
 		par->ops.fb_cursor = NULL;
 
 	fb->fbops = &par->ops;
-	fb->flags = FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST |
+	fb->flags = FBINFO_READS_FAST |
 		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
 		FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
 
diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c
index f929091da4e7..db129ed3b2f7 100644
--- a/drivers/video/fbdev/sm712fb.c
+++ b/drivers/video/fbdev/sm712fb.c
@@ -1528,7 +1528,6 @@ static int smtcfb_pci_probe(struct pci_dev *pdev,
 	sfb->fb = info;
 	sfb->chip_id = ent->device;
 	sfb->pdev = pdev;
-	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &smtcfb_ops;
 	info->fix = smtcfb_fix;
 	info->var = smtcfb_var;
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 78d85dae8ec8..df2574d4ff30 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1508,8 +1508,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 		par->ypan = 0;
 	}
 
-	info->flags = FBINFO_FLAG_DEFAULT |
-			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
+	info->flags = (par->ypan ? FBINFO_HWACCEL_YPAN : 0);
 
 	if (!par->ypan)
 		uvesafb_ops.fb_pan_display = NULL;
diff --git a/drivers/video/fbdev/vesafb.c b/drivers/video/fbdev/vesafb.c
index 7451c607dc50..422a1c53decd 100644
--- a/drivers/video/fbdev/vesafb.c
+++ b/drivers/video/fbdev/vesafb.c
@@ -457,7 +457,7 @@ static int vesafb_probe(struct platform_device *dev)
 	info->fbops = &vesafb_ops;
 	info->var = vesafb_defined;
 	info->fix = vesafb_fix;
-	info->flags = FBINFO_FLAG_DEFAULT | (ypan ? FBINFO_HWACCEL_YPAN : 0);
+	info->flags = (ypan ? FBINFO_HWACCEL_YPAN : 0);
 
 	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
 		err = -ENOMEM;
diff --git a/drivers/video/fbdev/vfb.c b/drivers/video/fbdev/vfb.c
index cf3c72754ce7..1b7c338f9956 100644
--- a/drivers/video/fbdev/vfb.c
+++ b/drivers/video/fbdev/vfb.c
@@ -455,7 +455,6 @@ static int vfb_probe(struct platform_device *dev)
 	info->fix = vfb_fix;
 	info->pseudo_palette = info->par;
 	info->par = NULL;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	retval = fb_alloc_cmap(&info->cmap, 256, 0);
 	if (retval < 0)
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index 34d00347ad58..b43c874c199f 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -1359,7 +1359,7 @@ static int vga16fb_probe(struct platform_device *dev)
 	info->fix = vga16fb_fix;
 	/* supports rectangles with widths of multiples of 8 */
 	info->pixmap.blit_x = 1 << 7 | 1 << 15 | 1 << 23 | 1 << 31;
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_HWACCEL_YPAN;
+	info->flags = FBINFO_HWACCEL_YPAN;
 
 	i = (info->var.bits_per_pixel == 8) ? 256 : 16;
 	ret = fb_alloc_cmap(&info->cmap, i, 0);
diff --git a/drivers/video/fbdev/xen-fbfront.c b/drivers/video/fbdev/xen-fbfront.c
index 6664dc7a5a41..9a4c29cb1a80 100644
--- a/drivers/video/fbdev/xen-fbfront.c
+++ b/drivers/video/fbdev/xen-fbfront.c
@@ -432,7 +432,7 @@ static int xenfb_probe(struct xenbus_device *dev,
 	fb_info->fix.type = FB_TYPE_PACKED_PIXELS;
 	fb_info->fix.accel = FB_ACCEL_NONE;
 
-	fb_info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+	fb_info->flags = FBINFO_VIRTFB;
 
 	ret = fb_alloc_cmap(&fb_info->cmap, 256, 0);
 	if (ret < 0) {
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 07/18] vfio-mdev: Remove flag FBINFO_DEFAULT from fbdev sample driver
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Kirti Wankhede
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_DEFAULT is 0 and has no effect, as struct fbinfo.flags
has been allocated to zero by framebuffer_alloc(). So do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Kirti Wankhede <kwankhede@nvidia.com>
---
 samples/vfio-mdev/mdpy-fb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/samples/vfio-mdev/mdpy-fb.c b/samples/vfio-mdev/mdpy-fb.c
index 3c8001b9e407..cda477b28685 100644
--- a/samples/vfio-mdev/mdpy-fb.c
+++ b/samples/vfio-mdev/mdpy-fb.c
@@ -162,7 +162,6 @@ static int mdpy_fb_probe(struct pci_dev *pdev,
 	}
 
 	info->fbops = &mdpy_fb_ops;
-	info->flags = FBINFO_DEFAULT;
 	info->pseudo_palette = par->palette;
 
 	ret = register_framebuffer(info);
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 06/18] fbdev/fsl-diu-fb: Remove flag FBINFO_DEFAULT
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Timur Tabi
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_DEFAULT is 0 and has no effect, as struct fbinfo.flags
has been allocated to zero by dmam_alloc_coherent(__GFP_ZERO). So do not
set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Timur Tabi <timur@kernel.org>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/fsl-diu-fb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/fsl-diu-fb.c b/drivers/video/fbdev/fsl-diu-fb.c
index 785eb8a06943..c62b48f27ba9 100644
--- a/drivers/video/fbdev/fsl-diu-fb.c
+++ b/drivers/video/fbdev/fsl-diu-fb.c
@@ -1476,7 +1476,7 @@ static int install_fb(struct fb_info *info)
 
 	info->var.activate = FB_ACTIVATE_NOW;
 	info->fbops = &fsl_diu_ops;
-	info->flags = FBINFO_DEFAULT | FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK |
+	info->flags = FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK |
 		FBINFO_READS_FAST;
 	info->pseudo_palette = mfbi->pseudo_palette;
 
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 11/18] media: Remove flag FBINFO_FLAG_DEFAULT from fbdev drivers
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Andy Walls,
	Mauro Carvalho Chehab, Hans Verkuil
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by kzalloc(). So do not
set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Andy Walls <awalls@md.metrocast.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
---
 drivers/media/pci/ivtv/ivtvfb.c              | 1 -
 drivers/media/test-drivers/vivid/vivid-osd.c | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c
index 0aeb9daaee4c..23c8c094e791 100644
--- a/drivers/media/pci/ivtv/ivtvfb.c
+++ b/drivers/media/pci/ivtv/ivtvfb.c
@@ -1048,7 +1048,6 @@ static int ivtvfb_init_vidmode(struct ivtv *itv)
 	/* Generate valid fb_info */
 
 	oi->ivtvfb_info.node = -1;
-	oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
 	oi->ivtvfb_info.par = itv;
 	oi->ivtvfb_info.var = oi->ivtvfb_defined;
 	oi->ivtvfb_info.fix = oi->ivtvfb_fix;
diff --git a/drivers/media/test-drivers/vivid/vivid-osd.c b/drivers/media/test-drivers/vivid/vivid-osd.c
index ec25edc679b3..051f1805a16d 100644
--- a/drivers/media/test-drivers/vivid/vivid-osd.c
+++ b/drivers/media/test-drivers/vivid/vivid-osd.c
@@ -310,7 +310,6 @@ static int vivid_fb_init_vidmode(struct vivid_dev *dev)
 	/* Generate valid fb_info */
 
 	dev->fb_info.node = -1;
-	dev->fb_info.flags = FBINFO_FLAG_DEFAULT;
 	dev->fb_info.par = dev;
 	dev->fb_info.var = dev->fb_defined;
 	dev->fb_info.fix = dev->fb_fix;
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 10/18] hid/picolcd: Remove flag FBINFO_FLAG_DEFAULT from fbdev driver
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Benjamin Tissoires,
	Bruno Prémont, Jiri Kosina
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by framebuffer_alloc(). So do
not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: "Bruno Prémont" <bonbons@linux-vserver.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
 drivers/hid/hid-picolcd_fb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/hid/hid-picolcd_fb.c b/drivers/hid/hid-picolcd_fb.c
index dabcd054dad9..d726aaafb146 100644
--- a/drivers/hid/hid-picolcd_fb.c
+++ b/drivers/hid/hid-picolcd_fb.c
@@ -527,7 +527,6 @@ int picolcd_init_framebuffer(struct picolcd_data *data)
 	info->var = picolcdfb_var;
 	info->fix = picolcdfb_fix;
 	info->fix.smem_len   = PICOLCDFB_SIZE*8;
-	info->flags = FBINFO_FLAG_DEFAULT;
 
 	fbdata = info->par;
 	spin_lock_init(&fbdata->lock);
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 02/18] fbdev: Remove FBINFO_DEFAULT from static structs
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_DEFAULT is 0 and has no effect, as struct fbinfo.flags
has been allocated to zero by a static declaration. So do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/68328fb.c  | 2 +-
 drivers/video/fbdev/acornfb.c  | 2 +-
 drivers/video/fbdev/g364fb.c   | 2 +-
 drivers/video/fbdev/hpfb.c     | 1 -
 drivers/video/fbdev/macfb.c    | 1 -
 drivers/video/fbdev/maxinefb.c | 1 -
 6 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/video/fbdev/68328fb.c b/drivers/video/fbdev/68328fb.c
index 07d6e8dc686b..956dd2399cc0 100644
--- a/drivers/video/fbdev/68328fb.c
+++ b/drivers/video/fbdev/68328fb.c
@@ -448,7 +448,7 @@ static int __init mc68x328fb_init(void)
 		fb_info.var.red.offset = fb_info.var.green.offset = fb_info.var.blue.offset = 0;
 	}
 	fb_info.pseudo_palette = &mc68x328fb_pseudo_palette;
-	fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	fb_info.flags = FBINFO_HWACCEL_YPAN;
 
 	if (fb_alloc_cmap(&fb_info.cmap, 256, 0))
 		return -ENOMEM;
diff --git a/drivers/video/fbdev/acornfb.c b/drivers/video/fbdev/acornfb.c
index 1b72edc01cfb..8fec21dfca09 100644
--- a/drivers/video/fbdev/acornfb.c
+++ b/drivers/video/fbdev/acornfb.c
@@ -694,7 +694,7 @@ static void acornfb_init_fbinfo(void)
 	first = 0;
 
 	fb_info.fbops		= &acornfb_ops;
-	fb_info.flags		= FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	fb_info.flags		= FBINFO_HWACCEL_YPAN;
 	fb_info.pseudo_palette	= current_par.pseudo_palette;
 
 	strcpy(fb_info.fix.id, "Acorn");
diff --git a/drivers/video/fbdev/g364fb.c b/drivers/video/fbdev/g364fb.c
index c5b7673ddc6c..0825cbde116e 100644
--- a/drivers/video/fbdev/g364fb.c
+++ b/drivers/video/fbdev/g364fb.c
@@ -219,7 +219,7 @@ int __init g364fb_init(void)
 	fb_info.screen_base = (char *) G364_MEM_BASE;	/* virtual kernel address */
 	fb_info.var = fb_var;
 	fb_info.fix = fb_fix;
-	fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	fb_info.flags = FBINFO_HWACCEL_YPAN;
 
 	fb_alloc_cmap(&fb_info.cmap, 255, 0);
 
diff --git a/drivers/video/fbdev/hpfb.c b/drivers/video/fbdev/hpfb.c
index 77fbff47b1a8..406c1383cbda 100644
--- a/drivers/video/fbdev/hpfb.c
+++ b/drivers/video/fbdev/hpfb.c
@@ -287,7 +287,6 @@ static int hpfb_init_one(unsigned long phys_base, unsigned long virt_base)
 	else
 		strcat(fb_info.fix.id, "Catseye");
 	fb_info.fbops = &hpfb_ops;
-	fb_info.flags = FBINFO_DEFAULT;
 	fb_info.var   = hpfb_defined;
 	fb_info.screen_base = (char *)fb_start;
 
diff --git a/drivers/video/fbdev/macfb.c b/drivers/video/fbdev/macfb.c
index 44ff860a3f37..5ca208d992cc 100644
--- a/drivers/video/fbdev/macfb.c
+++ b/drivers/video/fbdev/macfb.c
@@ -876,7 +876,6 @@ static int __init macfb_init(void)
 	fb_info.var		= macfb_defined;
 	fb_info.fix		= macfb_fix;
 	fb_info.pseudo_palette	= pseudo_palette;
-	fb_info.flags		= FBINFO_DEFAULT;
 
 	err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
 	if (err)
diff --git a/drivers/video/fbdev/maxinefb.c b/drivers/video/fbdev/maxinefb.c
index 4e6b05232ae2..0ac1873b2acb 100644
--- a/drivers/video/fbdev/maxinefb.c
+++ b/drivers/video/fbdev/maxinefb.c
@@ -155,7 +155,6 @@ int __init maxinefb_init(void)
 	fb_info.screen_base = (char *)maxinefb_fix.smem_start;
 	fb_info.var = maxinefb_defined;
 	fb_info.fix = maxinefb_fix;
-	fb_info.flags = FBINFO_DEFAULT;
 
 	fb_alloc_cmap(&fb_info.cmap, 256, 0);
 
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 04/18] fbdev: Remove FBINFO_DEFAULT from devm_kzalloc()'ed structs
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_DEFAULT is 0 and has no effect, as struct fbinfo.flags
has been allocated to zero by devm_kzalloc(). So do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/pxafb.c    | 1 -
 drivers/video/fbdev/sa1100fb.c | 1 -
 drivers/video/fbdev/wm8505fb.c | 3 +--
 drivers/video/fbdev/xilinxfb.c | 1 -
 4 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index 2a8b1dea3a67..c8c4677d06b4 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -1826,7 +1826,6 @@ static struct pxafb_info *pxafb_init_fbinfo(struct device *dev,
 	fbi->fb.var.vmode	= FB_VMODE_NONINTERLACED;
 
 	fbi->fb.fbops		= &pxafb_ops;
-	fbi->fb.flags		= FBINFO_DEFAULT;
 	fbi->fb.node		= -1;
 
 	addr = fbi;
diff --git a/drivers/video/fbdev/sa1100fb.c b/drivers/video/fbdev/sa1100fb.c
index a2408bf00ca0..3d76ce111488 100644
--- a/drivers/video/fbdev/sa1100fb.c
+++ b/drivers/video/fbdev/sa1100fb.c
@@ -1089,7 +1089,6 @@ static struct sa1100fb_info *sa1100fb_init_fbinfo(struct device *dev)
 	fbi->fb.var.vmode	= FB_VMODE_NONINTERLACED;
 
 	fbi->fb.fbops		= &sa1100fb_ops;
-	fbi->fb.flags		= FBINFO_DEFAULT;
 	fbi->fb.monspecs	= monspecs;
 	fbi->fb.pseudo_palette	= fbi->pseudo_palette;
 
diff --git a/drivers/video/fbdev/wm8505fb.c b/drivers/video/fbdev/wm8505fb.c
index 10a8b1250103..5833147aa43d 100644
--- a/drivers/video/fbdev/wm8505fb.c
+++ b/drivers/video/fbdev/wm8505fb.c
@@ -285,8 +285,7 @@ static int wm8505fb_probe(struct platform_device *pdev)
 	fbi->fb.fix.accel	= FB_ACCEL_NONE;
 
 	fbi->fb.fbops		= &wm8505fb_ops;
-	fbi->fb.flags		= FBINFO_DEFAULT
-				| FBINFO_HWACCEL_COPYAREA
+	fbi->fb.flags		= FBINFO_HWACCEL_COPYAREA
 				| FBINFO_HWACCEL_FILLRECT
 				| FBINFO_HWACCEL_XPAN
 				| FBINFO_HWACCEL_YPAN
diff --git a/drivers/video/fbdev/xilinxfb.c b/drivers/video/fbdev/xilinxfb.c
index 2aa3a528277f..768a281a8d2c 100644
--- a/drivers/video/fbdev/xilinxfb.c
+++ b/drivers/video/fbdev/xilinxfb.c
@@ -324,7 +324,6 @@ static int xilinxfb_assign(struct platform_device *pdev,
 	drvdata->info.fix.line_length = pdata->xvirt * BYTES_PER_PIXEL;
 
 	drvdata->info.pseudo_palette = drvdata->pseudo_palette;
-	drvdata->info.flags = FBINFO_DEFAULT;
 	drvdata->info.var = xilinx_fb_var;
 	drvdata->info.var.height = pdata->screen_height_mm;
 	drvdata->info.var.width = pdata->screen_width_mm;
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 17/18] fbdev: Remove FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

Remove the unused flags FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT. No
functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
---
 include/linux/fb.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/include/linux/fb.h b/include/linux/fb.h
index 1d5c13f34b09..43458f582f35 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -383,7 +383,6 @@ struct fb_tile_ops {
 #endif /* CONFIG_FB_TILEBLITTING */
 
 /* FBINFO_* = fb_info.flags bit flags */
-#define FBINFO_DEFAULT		0
 #define FBINFO_HWACCEL_DISABLED	0x0002
 	/* When FBINFO_HWACCEL_DISABLED is set:
 	 *  Hardware acceleration is turned off.  Software implementations
@@ -504,8 +503,6 @@ struct fb_info {
 	bool skip_vt_switch; /* no VT switch on suspend/resume required */
 };
 
-#define FBINFO_FLAG_DEFAULT	FBINFO_DEFAULT
-
 /* This will go away
  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
  * when it wants to turn the acceleration engine on.  This is
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 15/18] fbdev/atafb: Remove flag FBINFO_FLAG_DEFAULT
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by a static declaration. So do
not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/atafb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/video/fbdev/atafb.c b/drivers/video/fbdev/atafb.c
index 2bc4089865e6..c4a420b791b9 100644
--- a/drivers/video/fbdev/atafb.c
+++ b/drivers/video/fbdev/atafb.c
@@ -3112,7 +3112,6 @@ static int __init atafb_probe(struct platform_device *pdev)
 #ifdef ATAFB_FALCON
 	fb_info.pseudo_palette = current_par.hw.falcon.pseudo_palette;
 #endif
-	fb_info.flags = FBINFO_FLAG_DEFAULT;
 
 	if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, atafb_modedb,
 			  NUM_TOTAL_MODES, &atafb_modedb[defmode],
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 12/18] staging: Remove flag FBINFO_FLAG_DEFAULT from fbdev drivers
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Greg Kroah-Hartman,
	Sudip Mukherjee, Teddy Wang
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by framebuffer_alloc(). So do
not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
---
 drivers/staging/fbtft/fbtft-core.c | 2 +-
 drivers/staging/sm750fb/sm750.c    | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 3a4abf3bae40..eac1d570f437 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -684,7 +684,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	info->var.transp.offset =  0;
 	info->var.transp.length =  0;
 
-	info->flags =              FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+	info->flags =              FBINFO_VIRTFB;
 
 	par = info->par;
 	par->info = info;
diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index c260f73cf570..79bcd5bd4938 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -807,7 +807,6 @@ static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 	info->screen_base = crtc->v_screen;
 	pr_debug("screen_base vaddr = %p\n", info->screen_base);
 	info->screen_size = line_length * var->yres_virtual;
-	info->flags = FBINFO_FLAG_DEFAULT | 0;
 
 	/* set info->fix */
 	fix->type = FB_TYPE_PACKED_PIXELS;
-- 
2.41.0


^ permalink raw reply related

* [PATCH v4 03/18] fbdev: Remove FBINFO_DEFAULT from kzalloc()'ed structs
From: Thomas Zimmermann @ 2023-07-15 18:51 UTC (permalink / raw)
  To: deller, javierm, geert, dan.carpenter
  Cc: linux-sh, dri-devel, linux-kernel, amd-gfx, linux-input,
	linux-media, linux-fbdev, linux-staging, linux-arm-kernel,
	linux-geode, linux-hyperv, linux-omap, linuxppc-dev, kvm,
	Thomas Zimmermann, Sam Ravnborg, Russell King
In-Reply-To: <20230715185343.7193-1-tzimmermann@suse.de>

The flag FBINFO_DEFAULT is 0 and has no effect, as struct fbinfo.flags
has been allocated to zero by kzalloc(). So do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Russell King <linux@armlinux.org.uk>
---
 drivers/video/fbdev/controlfb.c           | 2 +-
 drivers/video/fbdev/cyber2000fb.c         | 2 +-
 drivers/video/fbdev/valkyriefb.c          | 1 -
 drivers/video/fbdev/vermilion/vermilion.c | 2 +-
 drivers/video/fbdev/vt8500lcdfb.c         | 3 +--
 5 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c
index 82eeb139c4eb..717134c141ff 100644
--- a/drivers/video/fbdev/controlfb.c
+++ b/drivers/video/fbdev/controlfb.c
@@ -775,7 +775,7 @@ static void __init control_init_info(struct fb_info *info, struct fb_info_contro
 	info->par = &p->par;
 	info->fbops = &controlfb_ops;
 	info->pseudo_palette = p->pseudo_palette;
-        info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	info->flags = FBINFO_HWACCEL_YPAN;
 	info->screen_base = p->frame_buffer + CTRLFB_OFF;
 
 	fb_alloc_cmap(&info->cmap, 256, 0);
diff --git a/drivers/video/fbdev/cyber2000fb.c b/drivers/video/fbdev/cyber2000fb.c
index 38c0a6866d76..98ea56a9abf1 100644
--- a/drivers/video/fbdev/cyber2000fb.c
+++ b/drivers/video/fbdev/cyber2000fb.c
@@ -1459,7 +1459,7 @@ static struct cfb_info *cyberpro_alloc_fb_info(unsigned int id, char *name)
 	cfb->fb.var.accel_flags	= FB_ACCELF_TEXT;
 
 	cfb->fb.fbops		= &cyber2000fb_ops;
-	cfb->fb.flags		= FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	cfb->fb.flags		= FBINFO_HWACCEL_YPAN;
 	cfb->fb.pseudo_palette	= cfb->pseudo_palette;
 
 	spin_lock_init(&cfb->reg_b0_lock);
diff --git a/drivers/video/fbdev/valkyriefb.c b/drivers/video/fbdev/valkyriefb.c
index b166b7cfe0e5..fd4488777032 100644
--- a/drivers/video/fbdev/valkyriefb.c
+++ b/drivers/video/fbdev/valkyriefb.c
@@ -535,7 +535,6 @@ static int __init valkyrie_init_info(struct fb_info *info,
 {
 	info->fbops = &valkyriefb_ops;
 	info->screen_base = p->frame_buffer + 0x1000;
-	info->flags = FBINFO_DEFAULT;
 	info->pseudo_palette = p->pseudo_palette;
 	info->par = &p->par;
 	return fb_alloc_cmap(&info->cmap, 256, 0);
diff --git a/drivers/video/fbdev/vermilion/vermilion.c b/drivers/video/fbdev/vermilion/vermilion.c
index 32e74e02a02f..71584c775efd 100644
--- a/drivers/video/fbdev/vermilion/vermilion.c
+++ b/drivers/video/fbdev/vermilion/vermilion.c
@@ -477,7 +477,7 @@ static int vml_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	}
 
 	info = &vinfo->info;
-	info->flags = FBINFO_DEFAULT | FBINFO_PARTIAL_PAN_OK;
+	info->flags = FBINFO_PARTIAL_PAN_OK;
 
 	err = vmlfb_enable_mmio(par);
 	if (err)
diff --git a/drivers/video/fbdev/vt8500lcdfb.c b/drivers/video/fbdev/vt8500lcdfb.c
index 31d4e85b220c..42d39a9d5130 100644
--- a/drivers/video/fbdev/vt8500lcdfb.c
+++ b/drivers/video/fbdev/vt8500lcdfb.c
@@ -300,8 +300,7 @@ static int vt8500lcd_probe(struct platform_device *pdev)
 	fbi->fb.var.vmode	= FB_VMODE_NONINTERLACED;
 
 	fbi->fb.fbops		= &vt8500lcd_ops;
-	fbi->fb.flags		= FBINFO_DEFAULT
-				| FBINFO_HWACCEL_COPYAREA
+	fbi->fb.flags		= FBINFO_HWACCEL_COPYAREA
 				| FBINFO_HWACCEL_FILLRECT
 				| FBINFO_HWACCEL_YPAN
 				| FBINFO_VIRTFB
-- 
2.41.0


^ permalink raw reply related


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