X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fi386%2Fkernel%2Firq.c;h=5fe547cd8f9fe48ab7d2e3dae930283b6baff70b;hb=0612ec48762bf8712db1925b2e67246d2237ebab;hp=061533e0cb5e8efa284258c3619665a287a786e5;hpb=972d19e837833b93466c6f6a8ef2a7d653000aa3;p=pandora-kernel.git

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 061533e0cb5e..5fe547cd8f9f 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,13 +53,19 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
  */
 fastcall unsigned int do_IRQ(struct pt_regs *regs)
 {	
-	/* high bits used in ret_from_ code */
-	int irq = regs->orig_eax & 0xff;
+	/* high bit used in ret_from_ code */
+	int irq = ~regs->orig_eax;
 #ifdef CONFIG_4KSTACKS
 	union irq_ctx *curctx, *irqctx;
 	u32 *isp;
 #endif
 
+	if (unlikely((unsigned)irq >= NR_IRQS)) {
+		printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
+					__FUNCTION__, irq);
+		BUG();
+	}
+
 	irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
 	/* Debugging check for stack overflow: is there less than 1KB free? */
@@ -100,8 +106,8 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
 		 * softirq checks work in the hardirq context.
 		 */
 		irqctx->tinfo.preempt_count =
-			irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK |
-			curctx->tinfo.preempt_count & SOFTIRQ_MASK;
+			(irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
+			(curctx->tinfo.preempt_count & SOFTIRQ_MASK);
 
 		asm volatile(
 			"       xchgl   %%ebx,%%esp      \n"
@@ -155,7 +161,7 @@ void irq_ctx_init(int cpu)
 	irqctx->tinfo.task              = NULL;
 	irqctx->tinfo.exec_domain       = NULL;
 	irqctx->tinfo.cpu               = cpu;
-	irqctx->tinfo.preempt_count     = SOFTIRQ_OFFSET;
+	irqctx->tinfo.preempt_count     = 0;
 	irqctx->tinfo.addr_limit        = MAKE_MM_SEG(0);
 
 	softirq_ctx[cpu] = irqctx;
@@ -200,6 +206,10 @@ asmlinkage void do_softirq(void)
 			: "0"(isp)
 			: "memory", "cc", "edx", "ecx", "eax"
 		);
+		/*
+		 * Shouldnt happen, we returned above if in_interrupt():
+	 	 */
+		WARN_ON_ONCE(softirq_count());
 	}
 
 	local_irq_restore(flags);
@@ -243,7 +253,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -285,13 +295,13 @@ void fixup_irqs(cpumask_t map)
 		if (irq == 2)
 			continue;
 
-		cpus_and(mask, irq_affinity[irq], map);
+		cpus_and(mask, irq_desc[irq].affinity, map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
 		}
-		if (irq_desc[irq].handler->set_affinity)
-			irq_desc[irq].handler->set_affinity(irq, mask);
+		if (irq_desc[irq].chip->set_affinity)
+			irq_desc[irq].chip->set_affinity(irq, mask);
 		else if (irq_desc[irq].action && !(warned++))
 			printk("Cannot set affinity for irq %i\n", irq);
 	}