diff options
| -rw-r--r-- | arch/arm/kernel/iblock.c | 6 | ||||
| -rw-r--r-- | arch/arm/kernel/irq.c | 11 |
2 files changed, 14 insertions, 3 deletions
diff --git a/arch/arm/kernel/iblock.c b/arch/arm/kernel/iblock.c index 87b98048922..48632738b5f 100644 --- a/arch/arm/kernel/iblock.c +++ b/arch/arm/kernel/iblock.c @@ -29,7 +29,7 @@ unsigned long s3c2410_gettimeoffset(void); static unsigned long iblock_t0; -static int iblock_limit; +int iblock_limit; static int iblock_max; @@ -64,9 +64,9 @@ void iblock_end(void) return; if (us < iblock_limit) return; - iblock_limit = 0; +// iblock_limit = 0; printk(KERN_ERR "interrupts were disabled for %lu us !\n", us); - WARN_ON(1); +// WARN_ON(1); } EXPORT_SYMBOL_GPL(iblock_end); diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 7141cee1fab..573d546b62e 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -104,6 +104,9 @@ static struct irq_desc bad_irq_desc = { .lock = SPIN_LOCK_UNLOCKED }; +extern int iblock_limit; +unsigned long s3c2410_gettimeoffset(void); + /* * do_IRQ handles all hardware IRQ's. Decoded IRQs should not * come via this function. Instead, they should provide their @@ -112,9 +115,12 @@ static struct irq_desc bad_irq_desc = { asmlinkage void __exception asm_do_IRQ(unsigned int irq, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); + unsigned long us; irq_enter(); + us = s3c2410_gettimeoffset(); + /* * Some hardware gives randomly wrong interrupts. Rather * than crashing, do something sensible. @@ -124,6 +130,11 @@ asmlinkage void __exception asm_do_IRQ(unsigned int irq, struct pt_regs *regs) else generic_handle_irq(irq); + us = s3c2410_gettimeoffset() - us; + + if (iblock_limit && us > iblock_limit && us < 10000000) + printk(KERN_ERR "asm_do_IRQ(%u): %lu us\n", irq, us); + /* AT91 specific workaround */ irq_finish(irq); |