[PATCH 4.9 75/83] MIPS: pistachio: Build uImage.gz by default

[PATCH 4.9 75/83] MIPS: pistachio: Build uImage.gz by default

[Greg Kroah-Hartman]

From: Paul Burton <paul.burton@mips.com>

commit e4f2d1af7163becb181419af9dece9206001e0a6 upstream.

The pistachio platform uses the U-Boot bootloader & generally boots a
kernel in the uImage format. As such it's useful to build one when
building the kernel, but to do so currently requires the user to
manually specify a uImage target on the make command line.

Make uImage.gz the pistachio platform's default build target, so that
the default is to build a kernel image that we can actually boot on a
board such as the MIPS Creator Ci40.

Marked for stable backport as far as v4.1 where pistachio support was
introduced. This is primarily useful for CI systems such as kernelci.org
which will benefit from us building a suitable image which can then be
booted as part of automated testing, extending our test coverage to the
affected stable branches.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
URL: https://groups.io/g/kernelci/message/388
Cc: stable@vger.kernel.org # v4.1+
Cc: linux-mips@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/mips/pistachio/Platform |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/mips/pistachio/Platform
+++ b/arch/mips/pistachio/Platform
@@ -6,3 +6,4 @@ cflags-$(CONFIG_MACH_PISTACHIO)		+=				\
 		-I$(srctree)/arch/mips/include/asm/mach-pistachio
 load-$(CONFIG_MACH_PISTACHIO)		+= 0xffffffff80400000
 zload-$(CONFIG_MACH_PISTACHIO)		+= 0xffffffff81000000
+all-$(CONFIG_MACH_PISTACHIO)		:= uImage.gz

[PATCH 4.9 76/83] Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment"

[Greg Kroah-Hartman]

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

This reverts commit f9b1baac265600a61d36ebaf9ba657119303b5b5 which is
commit a1e8783db8e0d58891681bc1e6d9ada66eae8e20 upstream.

Petr writes:
	Karl has reported to me today, that he's experiencing weird
	reboot hang on his devices with 4.9.180 kernel and that he has
	bisected it down to my backported patch.

	I would like to kindly ask you for removal of this patch.  This
	patch should be reverted from all stable kernels up to 5.1,
	because perf counters were not broken on those kernels, and this
	patch won't work on the ath79 legacy IRQ code anyway, it needs
	new irqchip driver which was enabled on ath79 with commit
	51fa4f8912c0 ("MIPS: ath79: drop legacy IRQ code").

Reported-by: Petr Štetiar <ynezz@true.cz>
Cc: Kevin 'ldir' Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Cc: John Crispin <john@phrozen.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/mips/ath79/setup.c          |    6 ++++++
 drivers/irqchip/irq-ath79-misc.c |   11 -----------
 2 files changed, 6 insertions(+), 11 deletions(-)

--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -183,6 +183,12 @@ const char *get_system_type(void)
 	return ath79_sys_type;
 }
 
+int get_c0_perfcount_int(void)
+{
+	return ATH79_MISC_IRQ(5);
+}
+EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
 unsigned int get_c0_compare_int(void)
 {
 	return CP0_LEGACY_COMPARE_IRQ;
--- a/drivers/irqchip/irq-ath79-misc.c
+++ b/drivers/irqchip/irq-ath79-misc.c
@@ -22,15 +22,6 @@
 #define AR71XX_RESET_REG_MISC_INT_ENABLE	4
 
 #define ATH79_MISC_IRQ_COUNT			32
-#define ATH79_MISC_PERF_IRQ			5
-
-static int ath79_perfcount_irq;
-
-int get_c0_perfcount_int(void)
-{
-	return ath79_perfcount_irq;
-}
-EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
 
 static void ath79_misc_irq_handler(struct irq_desc *desc)
 {
@@ -122,8 +113,6 @@ static void __init ath79_misc_intc_domai
 {
 	void __iomem *base = domain->host_data;
 
-	ath79_perfcount_irq = irq_create_mapping(domain, ATH79_MISC_PERF_IRQ);
-
 	/* Disable and clear all interrupts */
 	__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
 	__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);