From 44cb09c23f8e5838f24ef47d43dd2804b71b3a65 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sat, 22 Nov 2014 14:48:15 +0100 Subject: [PATCH] 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 Signed-off-by: Russell King --- arch/arm/include/asm/hw_irq.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/include/asm/hw_irq.h b/arch/arm/include/asm/hw_irq.h index a71b417..af79da4 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); -- 2.7.4