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ARM: fix up nested irq regs usage 

This should fix up the per-cpu irq register pointer if we have nested
hardware interrupts.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds 2006-10-06 13:11:15 -07:00
parent e317c8ccaa
commit e630015504
1 changed files with 2 additions and 1 deletions
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3
arch/arm/kernel/irq.c
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@ -111,6 +111,7 @@ static struct irq_desc bad_irq_desc = {
*/ */
asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs) asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
{ {
struct pt_regs *old_regs = set_irq_regs(regs);
struct irqdesc *desc = irq_desc + irq; struct irqdesc *desc = irq_desc + irq;
/* /*
@ -122,13 +123,13 @@ asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
irq_enter(); irq_enter();
set_irq_regs(regs);
desc_handle_irq(irq, desc); desc_handle_irq(irq, desc);
/* AT91 specific workaround */ /* AT91 specific workaround */
irq_finish(irq); irq_finish(irq);
irq_exit(); irq_exit();
set_irq_regs(old_regs);
} }
void set_irq_flags(unsigned int irq, unsigned int iflags) void set_irq_flags(unsigned int irq, unsigned int iflags)