[PATCH AUTOSEL 4.20 041/304] iwlwifi: fw: do not set sgi bits for HE connection

Sasha Levin
2019-01-28T17:49:30Z

From: Naftali Goldstein <naftali.goldstein@intel.com>

[ Upstream commit 5c2dbebb446539eb9640bf59a02756d6e7f1fc53 ]

If the association supports HE, HT/VHT rates will never be used for Tx
and therefore there's no need to set the sgi-per-channel-width-support
bits, so don't set them in this case.

Fixes: 110b32f065f3 ("iwlwifi: mvm: rs: add basic implementation of the new RS API handlers")
Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
index 7a98e1a1dc40..dabbc04853ac 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
@@ -98,8 +98,12 @@ static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
{
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
+ struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
u8 supp = 0;

+ if (he_cap && he_cap->has_he)
+ return 0;
+
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
--
2.19.1