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Diffstat (limited to 'arch/i386/kernel/irq.c')
-rw-r--r--arch/i386/kernel/irq.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 3dd2e180151..8cfc7dbec7b 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,6 +53,7 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
*/
fastcall unsigned int do_IRQ(struct pt_regs *regs)
{
+ struct pt_regs *old_regs;
/* high bit used in ret_from_ code */
int irq = ~regs->orig_eax;
struct irq_desc *desc = irq_desc + irq;
@@ -67,6 +68,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
BUG();
}
+ old_regs = set_irq_regs(regs);
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/* Debugging check for stack overflow: is there less than 1KB free? */
@@ -95,7 +97,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
* current stack (which is the irq stack already after all)
*/
if (curctx != irqctx) {
- int arg1, arg2, arg3, ebx;
+ int arg1, arg2, ebx;
/* build the stack frame on the IRQ stack */
isp = (u32*) ((char*)irqctx + sizeof(*irqctx));
@@ -114,17 +116,17 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
" xchgl %%ebx,%%esp \n"
" call *%%edi \n"
" movl %%ebx,%%esp \n"
- : "=a" (arg1), "=d" (arg2), "=c" (arg3), "=b" (ebx)
- : "0" (irq), "1" (desc), "2" (regs), "3" (isp),
+ : "=a" (arg1), "=d" (arg2), "=b" (ebx)
+ : "0" (irq), "1" (desc), "2" (isp),
"D" (desc->handle_irq)
: "memory", "cc"
);
} else
#endif
- desc->handle_irq(irq, desc, regs);
+ desc->handle_irq(irq, desc);
irq_exit();
-
+ set_irq_regs(old_regs);
return 1;
}