iwmc3200wifi: fix NULL pointer dereference in pmkid update

Commit Message

Zhu Yi Dec. 1, 2009, 3:48 a.m. UTC

None

Patch

diff --git a/drivers/net/wireless/iwmc3200wifi/commands.c b/drivers/net/wireless/iwmc3200wifi/commands.c
index bd06307..89b33fa 100644
--- a/drivers/net/wireless/iwmc3200wifi/commands.c
+++ b/drivers/net/wireless/iwmc3200wifi/commands.c
@@ -970,8 +970,10 @@  int iwm_send_pmkid_update(struct iwm_priv *iwm,
 	memset(&update, 0, sizeof(struct iwm_umac_pmkid_update));
 
 	update.command = cpu_to_le32(command);
-	memcpy(&update.bssid, pmksa->bssid, ETH_ALEN);
-	memcpy(&update.pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
+	if (pmksa->bssid)
+		memcpy(&update.bssid, pmksa->bssid, ETH_ALEN);
+	if (pmksa->pmkid)
+		memcpy(&update.pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
 
 	ret = iwm_send_wifi_if_cmd(iwm, &update,
 				   sizeof(struct iwm_umac_pmkid_update), 0);