diff options
| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2008-06-24 02:48:05 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-03 22:14:27 +0400 |
| commit | 1faf7f25b2aa4fcd2ae0ec2fd2e9fb9ff4bfee10 (patch) | |
| tree | 9cae252dc929d6e32e5b126d89d9c9cc3e429a06 /arch | |
| parent | c461a973118346d5c103aaaddd62e53939fd7c67 (diff) | |
| download | linux-1faf7f25b2aa4fcd2ae0ec2fd2e9fb9ff4bfee10.tar.xz | |
[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 <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/sgi-ip32/ip32-irq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index b0ea0e43ba48..0d6b6663d5f6 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) { |