From e6c0effa0e4dd17b4569bb62eaf6283033d475a4 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 15 Dec 2015 13:11:28 +0300
Subject: [PATCH] mic_virtio: fix a timeout loop
After the loop we test "if (!retry)" to see if we timedout. The problem
is "retry--" is a post-op so retry will be -1 at the end of the loop. I
have fixed this by changing it to a pre-op instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/mic/card/mic_virtio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/misc/mic/card/mic_virtio.c b/drivers/misc/mic/card/mic_virtio.c
index f6ed57d3125c7..17764b2fbee59 100644
--- a/drivers/misc/mic/card/mic_virtio.c
+++ b/drivers/misc/mic/card/mic_virtio.c
@@ -337,7 +337,7 @@ static int mic_find_vqs(struct virtio_device *vdev, unsigned nvqs,
* rings have been re-assigned.
*/
mic_send_intr(mvdev->mdev, mvdev->c2h_vdev_db);
- for (retry = 100; retry--;) {
+ for (retry = 100; --retry;) {
if (!ioread8(&dc->used_address_updated))
break;
msleep(100);
--
2.30.2