tree 6bf316536e4f3653559f89c81c040028a0748cba
parent 4da1874190946b16d21b3c02e283b08619255c24
author Colin Ian King <colin.king@canonical.com> 1502185952 +0100
committer David S. Miller <davem@davemloft.net> 1502251661 -0700

net: phy: mdio-bcm-unimac: fix unsigned wrap-around when decrementing timeout

Change post-decrement compare to pre-decrement to avoid an
unsigned integer wrap-around on timeout. This leads to the following
!timeout check to never to be true so -ETIMEDOUT is never returned.

Detected by CoverityScan, CID#1452623 ("Logically dead code")

Fixes: 69a60b0579a4 ("net: phy: mdio-bcm-unimac: factor busy polling loop")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>