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rtw88: fix NSS of hw_cap

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[ Upstream commit 4f5bb7ff8b8d4bafd91243fc969ed240e67aa1ca ]

8822C is a 2x2 11ac chip, and then NSS must be less or equal to 2. However,
current nss of hw cap is 3, likes
	hw cap: hci=0x0f, bw=0x07, ptcl=0x03, ant_num=7, nss=3

This commit adds constraint to make sure NSS <= rf_path_num, and result
looks like
	hw cap: hci=0x0f, bw=0x07, ptcl=0x03, ant_num=7, nss=2

Fixes: e3037485c6 ("rtw88: new Realtek 802.11ac driver")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ping-Ke Shih 2019-10-02 14:35:30 +08:00 • committed by Greg Kroah-Hartman
commit 7645298098
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/realtek/rtw88/main.c
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@ -1020,7 +1020,8 @@ static int rtw_dump_hw_feature(struct rtw_dev *rtwdev)
rtw_hw_config_rf_ant_num(rtwdev, efuse->hw_cap.ant_num);
if (efuse->hw_cap.nss == EFUSE_HW_CAP_IGNORE)
if (efuse->hw_cap.nss == EFUSE_HW_CAP_IGNORE ||
efuse->hw_cap.nss > rtwdev->hal.rf_path_num)
efuse->hw_cap.nss = rtwdev->hal.rf_path_num;
rtw_dbg(rtwdev, RTW_DBG_EFUSE,