[PATCH] swsusp: fix panic when signature can't be read

Do not panic a machine when swsusp signature can't be read.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/power/swap.c

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index a57c661..f1dd146b 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -311,8 +311,10 @@
 
 static int end_io(struct bio *bio, unsigned int num, int err)
 {
-	if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
-		panic("I/O error reading memory image");
+	if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) {
+		printk(KERN_ERR "I/O error reading swsusp image.\n");
+		return -EIO;
+	}
 	atomic_set(&io_done, 0);
 	return 0;
 }