Merge tag 'iwlwifi-for-kalle-2015-12-16' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

* don't load firmware that won't exist for 7260
* fix RCU splat

2 files changed, 44 insertions, 20 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-7000.c b/drivers/net/wireless/iwlwifi/iwl-7000.c
index bf88ec3a65fa..d9a4aee246a6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-7000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-7000.c
@@ -69,13 +69,19 @@
 #include "iwl-agn-hw.h"
 
 /* Highest firmware API version supported */
-#define IWL7260_UCODE_API_MAX   19
+#define IWL7260_UCODE_API_MAX   17
+#define IWL7265_UCODE_API_MAX   19
+#define IWL7265D_UCODE_API_MAX  19
 
 /* Oldest version we won't warn about */
 #define IWL7260_UCODE_API_OK    13
+#define IWL7265_UCODE_API_OK    13
+#define IWL7265D_UCODE_API_OK   13
 
 /* Lowest firmware API version supported */
 #define IWL7260_UCODE_API_MIN   13
+#define IWL7265_UCODE_API_MIN   13
+#define IWL7265D_UCODE_API_MIN  13
 
 /* NVM versions */
 #define IWL7260_NVM_VERSION             0x0a1d
@@ -149,10 +155,7 @@ static const struct iwl_ht_params iwl7000_ht_params = {
         .ht40_bands = BIT(IEEE80211_BAND_2GHZ) | BIT(IEEE80211_BAND_5GHZ),
 };
 
-#define IWL_DEVICE_7000                                         \
-        .ucode_api_max = IWL7260_UCODE_API_MAX,                 \
-        .ucode_api_ok = IWL7260_UCODE_API_OK,                   \
-        .ucode_api_min = IWL7260_UCODE_API_MIN,                 \
+#define IWL_DEVICE_7000_COMMON                                  \
         .device_family = IWL_DEVICE_FAMILY_7000,                \
         .max_inst_size = IWL60_RTC_INST_SIZE,                   \
         .max_data_size = IWL60_RTC_DATA_SIZE,                   \
@@ -163,6 +166,24 @@ static const struct iwl_ht_params iwl7000_ht_params = {
         .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K,    \
         .dccm_offset = IWL7000_DCCM_OFFSET
 
+#define IWL_DEVICE_7000                                         \
+        IWL_DEVICE_7000_COMMON,                                 \
+        .ucode_api_max = IWL7260_UCODE_API_MAX,                 \
+        .ucode_api_ok = IWL7260_UCODE_API_OK,                   \
+        .ucode_api_min = IWL7260_UCODE_API_MIN
+
+#define IWL_DEVICE_7005                                         \
+        IWL_DEVICE_7000_COMMON,                                 \
+        .ucode_api_max = IWL7265_UCODE_API_MAX,                 \
+        .ucode_api_ok = IWL7265_UCODE_API_OK,                   \
+        .ucode_api_min = IWL7265_UCODE_API_MIN
+
+#define IWL_DEVICE_7005D                                        \
+        IWL_DEVICE_7000_COMMON,                                 \
+        .ucode_api_max = IWL7265D_UCODE_API_MAX,                \
+        .ucode_api_ok = IWL7265D_UCODE_API_OK,                  \
+        .ucode_api_min = IWL7265D_UCODE_API_MIN
+
 const struct iwl_cfg iwl7260_2ac_cfg = {
         .name = "Intel(R) Dual Band Wireless AC 7260",
         .fw_name_pre = IWL7260_FW_PRE,
@@ -266,7 +287,7 @@ static const struct iwl_ht_params iwl7265_ht_params = {
 const struct iwl_cfg iwl3165_2ac_cfg = {
         .name = "Intel(R) Dual Band Wireless AC 3165",
         .fw_name_pre = IWL7265D_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005D,
         .ht_params = &iwl7000_ht_params,
         .nvm_ver = IWL3165_NVM_VERSION,
         .nvm_calib_ver = IWL3165_TX_POWER_VERSION,
@@ -277,7 +298,7 @@ const struct iwl_cfg iwl3165_2ac_cfg = {
 const struct iwl_cfg iwl7265_2ac_cfg = {
         .name = "Intel(R) Dual Band Wireless AC 7265",
         .fw_name_pre = IWL7265_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -288,7 +309,7 @@ const struct iwl_cfg iwl7265_2ac_cfg = {
 const struct iwl_cfg iwl7265_2n_cfg = {
         .name = "Intel(R) Dual Band Wireless N 7265",
         .fw_name_pre = IWL7265_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -299,7 +320,7 @@ const struct iwl_cfg iwl7265_2n_cfg = {
 const struct iwl_cfg iwl7265_n_cfg = {
         .name = "Intel(R) Wireless N 7265",
         .fw_name_pre = IWL7265_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -310,7 +331,7 @@ const struct iwl_cfg iwl7265_n_cfg = {
 const struct iwl_cfg iwl7265d_2ac_cfg = {
         .name = "Intel(R) Dual Band Wireless AC 7265",
         .fw_name_pre = IWL7265D_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005D,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265D_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -321,7 +342,7 @@ const struct iwl_cfg iwl7265d_2ac_cfg = {
 const struct iwl_cfg iwl7265d_2n_cfg = {
         .name = "Intel(R) Dual Band Wireless N 7265",
         .fw_name_pre = IWL7265D_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005D,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265D_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -332,7 +353,7 @@ const struct iwl_cfg iwl7265d_2n_cfg = {
 const struct iwl_cfg iwl7265d_n_cfg = {
         .name = "Intel(R) Wireless N 7265",
         .fw_name_pre = IWL7265D_FW_PRE,
-        IWL_DEVICE_7000,
+        IWL_DEVICE_7005D,
         .ht_params = &iwl7265_ht_params,
         .nvm_ver = IWL7265D_NVM_VERSION,
         .nvm_calib_ver = IWL7265_TX_POWER_VERSION,
@@ -342,5 +363,5 @@ const struct iwl_cfg iwl7265d_n_cfg = {
 
 MODULE_FIRMWARE(IWL7260_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
 MODULE_FIRMWARE(IWL3160_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
-MODULE_FIRMWARE(IWL7265_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
-MODULE_FIRMWARE(IWL7265D_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
+MODULE_FIRMWARE(IWL7265_MODULE_FIRMWARE(IWL7265_UCODE_API_OK));
+MODULE_FIRMWARE(IWL7265D_MODULE_FIRMWARE(IWL7265D_UCODE_API_OK));
diff --git a/drivers/net/wireless/iwlwifi/mvm/sta.c b/drivers/net/wireless/iwlwifi/mvm/sta.c
index 354acbde088e..2b976b110207 100644
--- a/drivers/net/wireless/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/iwlwifi/mvm/sta.c
@@ -1222,8 +1222,8 @@ static u8 iwl_mvm_get_key_sta_id(struct iwl_mvm *mvm,
             mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
                 u8 sta_id = mvmvif->ap_sta_id;
 
-                sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
-                                                lockdep_is_held(&mvm->mutex));
+                sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
+                                            lockdep_is_held(&mvm->mutex));
                 /*
                  * It is possible that the 'sta' parameter is NULL,
                  * for example when a GTK is removed - the sta_id will then
@@ -1590,14 +1590,15 @@ void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
                              u16 *phase1key)
 {
         struct iwl_mvm_sta *mvm_sta;
-        u8 sta_id = iwl_mvm_get_key_sta_id(mvm, vif, sta);
+        u8 sta_id;
         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
 
-        if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
-                return;
-
         rcu_read_lock();
 
+        sta_id = iwl_mvm_get_key_sta_id(mvm, vif, sta);
+        if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
+                goto unlock;
+
         if (!sta) {
                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
                 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
@@ -1609,6 +1610,8 @@ void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
         iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx);
+
+ unlock:
         rcu_read_unlock();
 }