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authorLennert Buytenhek <buytenh@wantstofly.org>2009-08-03 23:58:57 +0400
committerJohn W. Linville <linville@tuxdriver.com>2009-08-07 21:09:32 +0400
commita94cc97e14c5750ec2b50b2e4ecdfb0f369ed0f4 (patch)
treed29f78c4fcf664aaa8ddd1a8c79d169b34b6ed65 /drivers/net/wireless/mwl8k.c
parent37055bd455b31b8220c35a1ede9c6aceb791cc88 (diff)
downloadlinux-a94cc97e14c5750ec2b50b2e4ecdfb0f369ed0f4.tar.xz
mwl8k: prevent crash in ->configure_filter() if no interface was added
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwl8k.c')
-rw-r--r--drivers/net/wireless/mwl8k.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 25423c05aff1..6e491171f73e 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -261,7 +261,7 @@ struct mwl8k_vif {
*/
};
-#define MWL8K_VIF(_vif) (struct mwl8k_vif *)(&((_vif)->drv_priv))
+#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
static const struct ieee80211_channel mwl8k_channels[] = {
{ .center_freq = 2412, .hw_value = 1, },
@@ -3219,15 +3219,19 @@ static int mwl8k_configure_filter_wt(struct work_struct *wt)
struct dev_addr_list *mclist = worker->mclist;
struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mv_vif;
int rc = 0;
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
rc = mwl8k_cmd_set_pre_scan(hw);
else {
- mv_vif = MWL8K_VIF(priv->vif);
- rc = mwl8k_cmd_set_post_scan(hw, mv_vif->bssid);
+ u8 *bssid;
+
+ bssid = "\x00\x00\x00\x00\x00\x00";
+ if (priv->vif != NULL)
+ bssid = MWL8K_VIF(priv->vif)->bssid;
+
+ rc = mwl8k_cmd_set_post_scan(hw, bssid);
}
}