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ARM: 8218/1: warn if bad IRQ was scheduled

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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>
This commit is contained in:
Dmitry Eremin-Solenikov 2014-11-22 14:48:15 +01:00 committed by Russell King
parent 119acbd24c
commit 44cb09c23f
1 changed files with 1 additions and 0 deletions
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arch/arm/include/asm/hw_irq.h
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@ -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);