diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0101-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0101-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0101-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch b/target/linux/bcm27xx/patches-4.19/950-0101-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch new file mode 100644 index 0000000000..545be8004e --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0101-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch @@ -0,0 +1,36 @@ +From ffa437377a6121234cd85d3bd2a8d8c43f0bedd5 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 11 Dec 2017 09:18:32 +0000 +Subject: [PATCH] ARM: Activate FIQs to avoid __irq_startup warnings + +There is a new test in __irq_startup that the IRQ is activated, which +hasn't been the case for FIQs since they bypass some of the usual setup. + +Augment enable_fiq to include a call to irq_activate to avoid the +warning. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/kernel/fiq.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/arch/arm/kernel/fiq.c ++++ b/arch/arm/kernel/fiq.c +@@ -56,6 +56,8 @@ + static unsigned long dfl_fiq_insn; + static struct pt_regs dfl_fiq_regs; + ++extern int irq_activate(struct irq_desc *desc); ++ + /* Default reacquire function + * - we always relinquish FIQ control + * - we always reacquire FIQ control +@@ -140,6 +142,8 @@ static int fiq_start; + + void enable_fiq(int fiq) + { ++ struct irq_desc *desc = irq_to_desc(fiq + fiq_start); ++ irq_activate(desc); + enable_irq(fiq + fiq_start); + } + |