[PATCH] ppc32: Fix mpc8xx watchdog

The CONFIG_8xx_WDT option got broken in the generic hardirq update as ppc32
had its own different request_irq that worked when other arches used
setup_irq.  This is the trivial fix for the problem.

From: Carsten Juttner <carjay@gmx.net>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc/syslib/m8xx_wdt.c

@@ -11,6 +11,7 @@
 
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <asm/8xx_immap.h>
@@ -18,6 +19,12 @@
 
 static int wdt_timeout;
 
+static irqreturn_t m8xx_wdt_interrupt(int, void *, struct pt_regs *);
+static struct irqaction m8xx_wdt_irqaction = {
+	.handler = m8xx_wdt_interrupt,
+	.name = "watchdog",
+};
+
 void m8xx_wdt_reset(void)
 {
 	volatile immap_t *imap = (volatile immap_t *)IMAP_ADDR;
@@ -84,8 +91,8 @@ void __init m8xx_wdt_handler_install(bd_t * binfo)
 	imap->im_sit.sit_piscr =
 	    (mk_int_int_mask(PIT_INTERRUPT) << 8) | PISCR_PIE | PISCR_PTE;
 
-	if (request_irq(PIT_INTERRUPT, m8xx_wdt_interrupt, 0, "watchdog", NULL))
-		panic("m8xx_wdt: could not allocate watchdog irq!");
+	if (setup_irq(PIT_INTERRUPT, &m8xx_wdt_irqaction))
+		panic("m8xx_wdt: error setting up the watchdog irq!");
 
 	printk(KERN_NOTICE
 	       "m8xx_wdt: keep-alive trigger installed (PITC: 0x%04X)\n", pitc);