iwlwifi: fix possible NULL dereference in iwl_set_rate()

Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 465da4f..5751c89 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2915,6 +2915,10 @@ static void iwl_set_rate(struct iwl_priv *priv)
        int i;
 
        hw = iwl_get_hw_mode(priv, priv->phymode);
+       if (!hw) {
+               IWL_ERROR("Failed to set rate: unable to get hw mode\n");
+               return;
+       }
 
        priv->active_rate = 0;
        priv->active_rate_basic = 0;

diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 9918780..0b22e01 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -3003,6 +3003,10 @@ static void iwl_set_rate(struct iwl_priv *priv)
        int i;
 
        hw = iwl_get_hw_mode(priv, priv->phymode);
+       if (!hw) {
+               IWL_ERROR("Failed to set rate: unable to get hw mode\n");
+               return;
+       }
 
        priv->active_rate = 0;
        priv->active_rate_basic = 0;