[PATCH] capi: replace interruptible_sleep_on() with wait_event_interruptible()

From: Nishanth Aravamudan <nacc@us.ibm.com>

Use wait_event_interruptible() instead of the deprecated
interruptible_sleep_on(). Patch is straight-forward as current sleep is
conditionally looped. Compile-tested.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/isdn/capi/capi.c
===================================================================
--- linux-kj.orig/drivers/isdn/capi/capi.c	2005-10-28 16:25:14.000000000 +0400
+++ linux-kj/drivers/isdn/capi/capi.c	2005-10-28 16:26:22.000000000 +0400
@@ -675,13 +675,8 @@ capi_read(struct file *file, char __user
 		if (file->f_flags & O_NONBLOCK)
 			return -EAGAIN;
 
-		for (;;) {
-			interruptible_sleep_on(&cdev->recvwait);
-			if ((skb = skb_dequeue(&cdev->recvqueue)) != 0)
-				break;
-			if (signal_pending(current))
-				break;
-		}
+		wait_event_interruptible(cdev->recvwait,
+				((skb = skb_dequeue(&cdev->recvqueue)) == 0));
 		if (skb == 0)
 			return -ERESTARTNOHAND;
 	}