[PATCH] Fix Intel/Sharp command set erase suspend bug

When we sleep and wait for a suspended operation to be resumed, go
back and check until it's ready -- don't just continue after the first
time we're woken. This can cause file system corruption.
Signed-off-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/mtd/chips/cfi_cmdset_0001.c

@@ -1087,7 +1087,7 @@ static int inval_cache_and_wait_for_operation(
 		}
 		spin_lock(chip->mutex);
 
-		if (chip->state != chip_state) {
+		while (chip->state != chip_state) {
 			/* Someone's suspended the operation: sleep */
 			DECLARE_WAITQUEUE(wait, current);
 			set_current_state(TASK_UNINTERRUPTIBLE);