X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsh%2Fkernel%2Firq.c;h=9a7d936263fd90cd21eb9f120c4bdbe18049d298;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=a37e2d1cffcee150c3d611edb88b454c1f10ee0e;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index a37e2d1cf..9a7d93626 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -31,10 +31,10 @@
 #include <linux/init.h>
 #include <linux/seq_file.h>
 #include <linux/kallsyms.h>
+#include <linux/bitops.h>
 
 #include <asm/system.h>
 #include <asm/io.h>
-#include <asm/bitops.h>
 #include <asm/pgalloc.h>
 #include <asm/delay.h>
 #include <asm/irq.h>
@@ -137,14 +137,16 @@ unlock:
 int handle_IRQ_event(unsigned int irq, struct pt_regs * regs, struct irqaction * action)
 {
 	int status = 1;	/* Force the "do bottom halves" bit */
-	int retval = 0;
+	int ret, retval = 0;
 
 	if (!(action->flags & SA_INTERRUPT))
 		local_irq_enable();
 
 	do {
-		status |= action->flags;
-		retval |= action->handler(irq, action->dev_id, regs);
+		ret = action->handler(irq, action->dev_id, regs);
+		if (ret == IRQ_HANDLED)
+			status |= action->flags;
+		retval |= ret;
 		action = action->next;
 	} while (action);
 
@@ -436,7 +438,7 @@ int request_irq(unsigned int irq,
 
 	action->handler = handler;
 	action->flags = irqflags;
-	action->mask = 0;
+	cpus_clear(action->mask);
 	action->name = devname;
 	action->next = NULL;
 	action->dev_id = dev_id;
@@ -575,6 +577,49 @@ unsigned long probe_irq_on(void)
 
 EXPORT_SYMBOL(probe_irq_on);
 
+/* Return a mask of triggered interrupts (this
+ * can handle only legacy ISA interrupts).
+ */
+
+/*
+ *	probe_irq_mask - scan a bitmap of interrupt lines
+ *	@val:	mask of interrupts to consider
+ *
+ *	Scan the ISA bus interrupt lines and return a bitmap of
+ *	active interrupts. The interrupt probe logic state is then
+ *	returned to its previous value.
+ *
+ *	Note: we need to scan all the irq's even though we will
+ *	only return ISA irq numbers - just so that we reset them
+ *	all to a known state.
+ */
+unsigned int probe_irq_mask(unsigned long val)
+{
+	int i;
+	unsigned int mask;
+
+	mask = 0;
+	for (i = 0; i < NR_IRQS; i++) {
+		irq_desc_t *desc = irq_desc + i;
+		unsigned int status;
+
+		spin_lock_irq(&desc->lock);
+		status = desc->status;
+
+		if (status & IRQ_AUTODETECT) {
+			if (i < 16 && !(status & IRQ_WAITING))
+				mask |= 1 << i;
+
+			desc->status = status & ~IRQ_AUTODETECT;
+			desc->handler->shutdown(i);
+		}
+		spin_unlock_irq(&desc->lock);
+	}
+	up(&probe_sem);
+
+	return mask & val;
+}
+
 int probe_irq_off(unsigned long val)
 {
 	int i, irq_found, nr_irqs;