Merge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued

Back-merge from drm-fixes into drm-intel-next to sort out two things:

- interlaced support: -fixes contains a bugfix to correctly clear
  interlaced configuration bits in case the bios sets up an interlaced
  mode and we want to set up the progressive mode (current kernels
  don't support interlaced). The actual feature work to support
  interlaced depends upon (and conflicts with) this bugfix.

- forcewake voodoo to workaround missed IRQ issues: -fixes only enabled
  this for ivybridge, but some recent bug reports indicate that we
  need this on Sandybridge, too. But in a slightly different flavour
  and with other fixes and reworks on top. Additionally there are some
  forcewake cleanup patches heading to -next that would conflict with
  currrent -fixes.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/cfg80211.c b/drivers/net/wireless/iwmc3200wifi/cfg80211.c
index c42be81e979e..48e8218fd23b 100644
--- a/drivers/net/wireless/iwmc3200wifi/cfg80211.c
+++ b/drivers/net/wireless/iwmc3200wifi/cfg80211.c
@@ -165,11 +165,15 @@ static int iwm_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
 				struct key_params *params)
 {
 	struct iwm_priv *iwm = ndev_to_iwm(ndev);
-	struct iwm_key *key = &iwm->keys[key_index];
+	struct iwm_key *key;
 	int ret;
 
 	IWM_DBG_WEXT(iwm, DBG, "Adding key for %pM\n", mac_addr);
 
+	if (key_index >= IWM_NUM_KEYS)
+		return -ENOENT;
+
+	key = &iwm->keys[key_index];
 	memset(key, 0, sizeof(struct iwm_key));
 	ret = iwm_key_init(key, key_index, mac_addr, params);
 	if (ret < 0) {
@@ -214,8 +218,12 @@ static int iwm_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
 				u8 key_index, bool pairwise, const u8 *mac_addr)
 {
 	struct iwm_priv *iwm = ndev_to_iwm(ndev);
-	struct iwm_key *key = &iwm->keys[key_index];
+	struct iwm_key *key;
 
+	if (key_index >= IWM_NUM_KEYS)
+		return -ENOENT;
+
+	key = &iwm->keys[key_index];
 	if (!iwm->keys[key_index].key_len) {
 		IWM_DBG_WEXT(iwm, DBG, "Key %d not used\n", key_index);
 		return 0;
@@ -236,6 +244,9 @@ static int iwm_cfg80211_set_default_key(struct wiphy *wiphy,
 
 	IWM_DBG_WEXT(iwm, DBG, "Default key index is: %d\n", key_index);
 
+	if (key_index >= IWM_NUM_KEYS)
+		return -ENOENT;
+
 	if (!iwm->keys[key_index].key_len) {
 		IWM_ERR(iwm, "Key %d not used\n", key_index);
 		return -EINVAL;