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| author | Colin Ian King <colin.king@canonical.com> | 2017-08-08 10:52:32 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-08 21:07:41 -0700 |
| commit | 51ce3e2145cc3927c9551b8c3623610114b41651 (patch) | |
| tree | 6bf316536e4f3653559f89c81c040028a0748cba /drivers/net/phy | |
| parent | 4da1874190946b16d21b3c02e283b08619255c24 (diff) | |
| download | linux-51ce3e2145cc3927c9551b8c3623610114b41651.tar.bz2 | |
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>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/mdio-bcm-unimac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/phy/mdio-bcm-unimac.c b/drivers/net/phy/mdio-bcm-unimac.c index 89425ca48412..73c5267a11fd 100644 --- a/drivers/net/phy/mdio-bcm-unimac.c +++ b/drivers/net/phy/mdio-bcm-unimac.c @@ -71,7 +71,7 @@ static int unimac_mdio_poll(void *wait_func_data) return 0; usleep_range(1000, 2000); - } while (timeout--); + } while (--timeout); if (!timeout) return -ETIMEDOUT; |