diff options
| author | Colin Ian King <colin.king@canonical.com> | 2018-09-14 17:39:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-29 03:07:33 -0700 |
| commit | 43e575023f1acb71dcf02ce5e67ca4451fff3cdd (patch) | |
| tree | 6ba23ad7877db9512fbb189c696774846e2c5672 /drivers | |
| parent | 11f734283a987ac26365aefafdd012a3f37e05a3 (diff) | |
net: hp100: fix always-true check for link up state
[ Upstream commit a7f38002fb69b44f8fc622ecb838665d0b8666af ]
The operation ~(p100_inb(VG_LAN_CFG_1) & HP100_LINK_UP) returns a value
that is always non-zero and hence the wait for the link to drop always
terminates prematurely. Fix this by using a logical not operator instead
of a bitwise complement. This issue has been in the driver since
pre-2.6.12-rc2.
Detected by CoverityScan, CID#114157 ("Logical vs. bitwise operator")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hp/hp100.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hp/hp100.c b/drivers/net/ethernet/hp/hp100.c index 631dbc7b4dbb..0988bf1a43c0 100644 --- a/drivers/net/ethernet/hp/hp100.c +++ b/drivers/net/ethernet/hp/hp100.c @@ -2636,7 +2636,7 @@ static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin) /* Wait for link to drop */ time = jiffies + (HZ / 10); do { - if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST)) + if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST)) break; if (!in_interrupt()) schedule_timeout_interruptible(1); |