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| author |   Kangjie Lu <kjlu@umn.edu> | 2019-03-12 03:05:02 -0500 |
|---|---|---|
| committer |   Kalle Valo <kvalo@codeaurora.org> | 2019-04-25 19:40:09 +0300 |
| commit | 0ed2a005347400500a39ea7c7318f1fea57fb3ca (patch) | |
| tree | 3e8e0054f5f73f51dd73f2b540c745406c2b71c3 /drivers/net/wireless/st | |
| parent | ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit (diff) | |
| download | linux-dev-0ed2a005347400500a39ea7c7318f1fea57fb3ca.tar.xz linux-dev-0ed2a005347400500a39ea7c7318f1fea57fb3ca.zip | |
net: cw1200: fix a NULL pointer dereference
In case create_singlethread_workqueue fails, the fix free the
hardware and returns NULL to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/st')
| -rw-r--r-- | drivers/net/wireless/st/cw1200/main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/st/cw1200/main.c b/drivers/net/wireless/st/cw1200/main.c index 90dc979f260b..c1608f0bf6d0 100644 --- a/drivers/net/wireless/st/cw1200/main.c +++ b/drivers/net/wireless/st/cw1200/main.c @@ -345,6 +345,11 @@ static struct ieee80211_hw *cw1200_init_common(const u8 *macaddr, mutex_init(&priv->wsm_cmd_mux); mutex_init(&priv->conf_mutex); priv->workqueue = create_singlethread_workqueue("cw1200_wq"); + if (!priv->workqueue) { + ieee80211_free_hw(hw); + return NULL; + } + sema_init(&priv->scan.lock, 1); INIT_WORK(&priv->scan.work, cw1200_scan_work); INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work); |