From: Juergen Gross <jgross@suse.com>
Date: Wed, 7 Dec 2022 07:19:38 +0000 (+0100)
Subject: xen/netback: fix build warning
X-Git-Tag: v4.9.336~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbc70a04a0369ad95a45aa407eae50cadfbd893b;p=thirdparty%2Fkernel%2Fstable.git

xen/netback: fix build warning

[ 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>
---

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index c7d480c1a0668..f82120f81c79f 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;