diff options
| author | Eugene Teo <eteo@redhat.com> | 2007-05-19 05:09:20 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2007-05-22 17:02:29 +0200 |
| commit | 596f2d0554352f1089f7478b309b27d8cdf5cd4f (patch) | |
| tree | f901ca3688180b5405881fabd68f401ce457a247 /drivers/net/wireless/libertas/fw.c | |
| parent | [PATCH] libertas: skb dereferenced after netif_rx (diff) | |
| download | linux-596f2d0554352f1089f7478b309b27d8cdf5cd4f.tar.xz linux-596f2d0554352f1089f7478b309b27d8cdf5cd4f.zip | |
[PATCH] drivers/net/wireless/libertas/fw.c: fix use-before-check
NULL checks should be performed before the dereference.
Spotted by the Coverity checker.
Signed-off-by: Eugene Teo <eteo@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/libertas/fw.c')
| -rw-r--r-- | drivers/net/wireless/libertas/fw.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/wireless/libertas/fw.c b/drivers/net/wireless/libertas/fw.c index 441123c85e62..5c63c9b1659c 100644 --- a/drivers/net/wireless/libertas/fw.c +++ b/drivers/net/wireless/libertas/fw.c @@ -333,18 +333,22 @@ static void command_timer_fn(unsigned long data) unsigned long flags; ptempnode = adapter->cur_cmd; + if (ptempnode == NULL) { + lbs_pr_debug(1, "PTempnode Empty\n"); + return; + } + cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr; + if (!cmd) { + lbs_pr_debug(1, "cmd is NULL\n"); + return; + } lbs_pr_info("command_timer_fn fired (%x)\n", cmd->command); if (!adapter->fw_ready) return; - if (ptempnode == NULL) { - lbs_pr_debug(1, "PTempnode Empty\n"); - return; - } - spin_lock_irqsave(&adapter->driver_lock, flags); adapter->cur_cmd = NULL; spin_unlock_irqrestore(&adapter->driver_lock, flags); |