From 1faf7f25b2aa4fcd2ae0ec2fd2e9fb9ff4bfee10 Mon Sep 17 00:00:00 2001 From: Thomas Bogendoerfer Date: Tue, 24 Jun 2008 00:48:05 +0200 Subject: [MIPS] IP32: Fix unexpected irq 71 It's possible that the crime interrupt handler is called without pending interrupts (probably a hardware issue). To avoid irritating "unexpected irq 71" messages, we now just ignore the spurious crime interrupts. Signed-off-by: Thomas Bogendoerfer Signed-off-by: Ralf Baechle --- arch/mips/sgi-ip32/ip32-irq.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/mips/sgi-ip32') diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index b0ea0e43ba4..0d6b6663d5f 100644 --- a/arch/mips/sgi-ip32/ip32-irq.c +++ b/arch/mips/sgi-ip32/ip32-irq.c @@ -425,6 +425,11 @@ static void ip32_irq0(void) BUILD_BUG_ON(MACEISA_SERIAL2_RDMAOR_IRQ - MACEISA_AUDIO_SW_IRQ != 31); crime_int = crime->istat & crime_mask; + + /* crime sometime delivers spurious interrupts, ignore them */ + if (unlikely(crime_int == 0)) + return; + irq = MACE_VID_IN1_IRQ + __ffs(crime_int); if (crime_int & CRIME_MACEISA_INT_MASK) { -- cgit v1.2.3