[PATCH 4.9 29/31] xen/netback: fix build warning

Greg Kroah-Hartman
2022-12-12T13:56:23Z

From: Juergen Gross <jgross@suse.com>

[ Upstream commit 7dfa764e0223a324366a2a1fc056d4d9d4e95491 ]

Commit ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in
the non-linear area") introduced a (valid) build warning. There have
even been reports of this problem breaking networking of Xen guests.

Fixes: ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in the non-linear area")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Tested-by: Jason Andryuk <jandryuk@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/xen-netback/netback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index c7d480c1a066..f82120f81c79 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -523,7 +523,7 @@ static int xenvif_tx_check_gop(struct xenvif_queue *queue,
const bool sharedslot = nr_frags &&
frag_get_pending_idx(&shinfo->frags[0]) ==
copy_pending_idx(skb, copy_count(skb) - 1);
- int i, err;
+ int i, err = 0;

for (i = 0; i < copy_count(skb); i++) {
int newerr;
--
2.35.1