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| author | Wim Van Sebroeck <wim@iguana.be> | 2007-05-01 08:53:01 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-05-01 08:53:01 +0200 |
| commit | 48a7afe314bfc4d7f50e1608632f503dbba7e013 (patch) | |
| tree | 4a80e6b96321a71affd1bacea817de93be08894b /arch/mips/kernel/genex.S | |
| parent | [WATCHDOG] Semi-typical watchdog bug re early misc_register() (diff) | |
| parent | libata: honour host controllers that want just one host (diff) | |
| download | linux-48a7afe314bfc4d7f50e1608632f503dbba7e013.tar.xz linux-48a7afe314bfc4d7f50e1608632f503dbba7e013.zip | |
Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/mips/kernel/genex.S')
| -rw-r--r-- | arch/mips/kernel/genex.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index 83843a229be7..297bd56c2347 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -128,6 +128,37 @@ handle_vcei: .align 5 NESTED(handle_int, PT_SIZE, sp) +#ifdef CONFIG_TRACE_IRQFLAGS + /* + * Check to see if the interrupted code has just disabled + * interrupts and ignore this interrupt for now if so. + * + * local_irq_disable() disables interrupts and then calls + * trace_hardirqs_off() to track the state. If an interrupt is taken + * after interrupts are disabled but before the state is updated + * it will appear to restore_all that it is incorrectly returning with + * interrupts disabled + */ + .set push + .set noat + mfc0 k0, CP0_STATUS +#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) + and k0, ST0_IEP + bnez k0, 1f + + mfc0 k0, EP0_EPC + .set noreorder + j k0 + rfe +#else + and k0, ST0_IE + bnez k0, 1f + + eret +#endif +1: + .set pop +#endif SAVE_ALL CLI TRACE_IRQS_OFF |