From: Tom Rix trix@redhat.com
[ Upstream commit 774d977abfd024e6f73484544b9abe5a5cd62de7 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/b53/b53_common.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 274d369151107..5c3fa0be8844e 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1160,6 +1160,8 @@ 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);