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* [PATCH 6.15 485/515] fbdev: nvidiafb: add depends on HAS_IOPORT
       [not found] <20250818124458.334548733@linuxfoundation.org>
@ 2025-08-18 12:47 ` Greg Kroah-Hartman
  0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2025-08-18 12:47 UTC (permalink / raw)
  To: stable
  Cc: Greg Kroah-Hartman, patches, Randy Dunlap, Arnd Bergmann,
	Niklas Schnelle, Antonino Daplas, Helge Deller, linux-fbdev,
	dri-devel

6.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Randy Dunlap <rdunlap@infradead.org>

commit ecdd7df997fd992f0ec70b788e3b12258008a2bf upstream.

The nvidiafb driver uses inb()/outb() without depending on HAS_IOPORT,
which leads to build errors since kernel v6.13-rc1:
commit 6f043e757445 ("asm-generic/io.h: Remove I/O port accessors
for HAS_IOPORT=n")

Add the HAS_IOPORT dependency to prevent the build errors.

(Found in ARCH=um allmodconfig builds)

drivers/video/fbdev/nvidia/nv_accel.c: In function ‘NVDmaWait’:
include/asm-generic/io.h:596:15: error: call to ‘_outb’ declared with attribute error: outb() requires CONFIG_HAS_IOPORT
  596 | #define _outb _outb

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: stable@vger.kernel.org # v6.13+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/video/fbdev/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -660,7 +660,7 @@ config FB_ATMEL
 
 config FB_NVIDIA
 	tristate "nVidia Framebuffer Support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT



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2025-08-18 12:47 ` [PATCH 6.15 485/515] fbdev: nvidiafb: add depends on HAS_IOPORT Greg Kroah-Hartman

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