From: Andrei Otcheretianski <[email protected]>

Add module parameter that disables VHT capabilities.

Signed-off-by: Andrei Otcheretianski <[email protected]>
Signed-off-by: Emmanuel Grumbach <[email protected]>
---
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c       | 4 ++++
 drivers/net/wireless/intel/iwlwifi/iwl-modparams.h | 2 ++
 drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c 
b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index ee4ffa5..184c0fe 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1719,3 +1719,7 @@ MODULE_PARM_DESC(fw_monitor,
 module_param_named(d0i3_timeout, iwlwifi_mod_params.d0i3_entry_delay,
                   uint, S_IRUGO);
 MODULE_PARM_DESC(d0i3_timeout, "Timeout to D0i3 entry when idle (ms)");
+
+module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool,
+                  S_IRUGO);
+MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities");
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-modparams.h 
b/drivers/net/wireless/intel/iwlwifi/iwl-modparams.h
index b88ecc7..d1a5dd1 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-modparams.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-modparams.h
@@ -115,6 +115,7 @@ enum iwl_amsdu_size {
  *     entering D0i3 (in msecs)
  * @lar_disable: disable LAR (regulatory), default = 0
  * @fw_monitor: allow to use firmware monitor
+ * @disable_11ac: disable VHT capabilities, default = false.
  */
 struct iwl_mod_params {
        int sw_crypto;
@@ -135,6 +136,7 @@ struct iwl_mod_params {
        unsigned int d0i3_entry_delay;
        bool lar_disable;
        bool fw_monitor;
+       bool disable_11ac;
 };
 
 #endif /* #__iwl_modparams_h__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c 
b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index e84cb8d..3481357 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -452,7 +452,7 @@ static void iwl_init_sbands(struct device *dev, const 
struct iwl_cfg *cfg,
                                          IEEE80211_BAND_5GHZ);
        iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ,
                             tx_chains, rx_chains);
-       if (data->sku_cap_11ac_enable)
+       if (data->sku_cap_11ac_enable && !iwlwifi_mod_params.disable_11ac)
                iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap,
                                      tx_chains, rx_chains);
 
-- 
2.5.0

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