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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2014-11-22 16:48:15 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-11-27 19:15:33 +0300
commit44cb09c23f8e5838f24ef47d43dd2804b71b3a65 (patch)
tree250e9d1789881a744d5bf88ee7e6322be3ffdf11 /arch/arm/include/asm/hw_irq.h
parent119acbd24c54d73c8941f43f16817c3417237413 (diff)
downloadlinux-44cb09c23f8e5838f24ef47d43dd2804b71b3a65.tar.xz
ARM: 8218/1: warn if bad IRQ was scheduled
If somebody causes an unexpected bad IRQ, this even will be unnoticed in both dmesg and system logs. If the "bad" IRQ is stuck, the device will just hang silently w/o reporting anything. Compare this to the generic behaviour (from include/asm-generic/hardirq.h) which prints a message with critical level. So to help everybody, include the same message into ARM-specific ack_bad_irq(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/hw_irq.h')
-rw-r--r--arch/arm/include/asm/hw_irq.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/hw_irq.h b/arch/arm/include/asm/hw_irq.h
index a71b417b1856..af79da40af2a 100644
--- a/arch/arm/include/asm/hw_irq.h
+++ b/arch/arm/include/asm/hw_irq.h
@@ -8,6 +8,7 @@ static inline void ack_bad_irq(int irq)
{
extern unsigned long irq_err_count;
irq_err_count++;
+ pr_crit("unexpected IRQ trap at vector %02x\n", irq);
}
void set_irq_flags(unsigned int irq, unsigned int flags);