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authorTom Rix <trix@redhat.com>2020-08-21 06:56:00 -0700
committerDavid S. Miller <davem@davemloft.net>2020-08-21 11:46:12 -0700
commit774d977abfd024e6f73484544b9abe5a5cd62de7 (patch)
tree3e9e7ce62a20f07b3bd500b8f45a2eded157e4c0
parentf6db9096416209474090d64d8284e7c16c3d8873 (diff)
downloadlinux-774d977abfd024e6f73484544b9abe5a5cd62de7.tar.bz2
net: dsa: b53: check for timeout
clang static analysis reports this problem b53_common.c:1583:13: warning: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage ent.port &= ~BIT(port); ~~~~~~~~ ^ ent is set by a successful call to b53_arl_read(). Unsuccessful calls are caught by an switch statement handling specific returns. b32_arl_read() calls b53_arl_op_wait() which fails with the unhandled -ETIMEDOUT. So add -ETIMEDOUT to the switch statement. Because b53_arl_op_wait() already prints out a message, do not add another one. Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/dsa/b53/b53_common.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 6500179c2ca2..0837ae0e0c5e 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1554,6 +1554,8 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
return ret;
switch (ret) {
+ case -ETIMEDOUT:
+ return ret;
case -ENOSPC:
dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n",
addr, vid);