From: Yan-Hsuan Chuang yhchuang@realtek.com
[ Upstream commit 3f194bd4ca1cd9b8eef34d37d562279dbeb80319 ]
The coex mechanism used to skip upon the freeze flag is raised. That will cause the coex mechanism being skipped unexpectedly. Coex only wanted to keep the TDMA table from being changed by BT side.
So, check the freeze and reason, if the coex reason is coming from BT info, skip it, to make sure the coex triggered by Wifi itself can work.
This is required for the AP mode, while the control flow is different with STA mode. When starting an AP mode, the AP mode needs to start working immedaitely after leaving IPS, and the freeze flag could be raised. If the coex info is skipped, then the AP mode will not set the antenna owner, leads to TX stuck.
Fixes: 4136214f7c46 ("rtw88: add BT co-existence support") Signed-off-by: Yan-Hsuan Chuang yhchuang@realtek.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20200717064937.27966-5-yhchuang@realtek.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/realtek/rtw88/coex.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw88/coex.c b/drivers/net/wireless/realtek/rtw88/coex.c index 567372fb4e12e..c73101afbeddb 100644 --- a/drivers/net/wireless/realtek/rtw88/coex.c +++ b/drivers/net/wireless/realtek/rtw88/coex.c @@ -1920,7 +1920,8 @@ static void rtw_coex_run_coex(struct rtw_dev *rtwdev, u8 reason) if (coex_stat->wl_under_ips) return;
- if (coex->freeze && !coex_stat->bt_setup_link) + if (coex->freeze && coex_dm->reason == COEX_RSN_BTINFO && + !coex_stat->bt_setup_link) return;
coex_stat->cnt_wl[COEX_CNT_WL_COEXRUN]++;