[PATCH] drivers/char/synclinkmp.c: fix polling loop

From: Marcin Slusarz <marcin.slusarz@gmail.com>

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/char/synclinkmp.c
===================================================================
--- linux-kj.orig/drivers/char/synclinkmp.c	2006-01-18 16:45:23.000000000 +0300
+++ linux-kj/drivers/char/synclinkmp.c	2006-01-18 16:45:42.000000000 +0300
@@ -5132,8 +5132,8 @@ int register_test(SLMP_INFO *info)
 
 int irq_test(SLMP_INFO *info)
 {
-	unsigned long timeout;
 	unsigned long flags;
+	unsigned long end_time;
 
 	unsigned char timer = (info->port_num & 1) ? TIMER2 : TIMER0;
 
@@ -5167,8 +5167,8 @@ int irq_test(SLMP_INFO *info)
 
 	spin_unlock_irqrestore(&info->lock,flags);
 
-	timeout=100;
-	while( timeout-- && !info->irq_occurred ) {
+	end_time = jiffies + msecs_to_jiffies(1000);
+	while (time_before(jiffies, end_time) && !info->irq_occurred) {
 		msleep_interruptible(10);
 	}