| Message ID | 20221117085235.53777-1-pkshih@realtek.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: rtw89: avoid inaccessible IO operations during doing change_interface() | expand |
Ping-Ke Shih <pkshih@realtek.com> wrote: > During doing change_interface(), hardware is power-off, so some components > are inaccessible and return error. This causes things unexpected, and we > don't have a warning message for that. So, ignore some IO operations in > this situation, and add a warning message to indicate something wrong. > > Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Patch applied to wireless-next.git, thanks. ac3a9f1838d8 wifi: rtw89: avoid inaccessible IO operations during doing change_interface()
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index b60de6662548b..dfd0ba8cb5772 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -2959,6 +2959,7 @@ enum rtw89_flags { RTW89_FLAG_CRASH_SIMULATING, RTW89_FLAG_WOWLAN, RTW89_FLAG_FORBIDDEN_TRACK_WROK, + RTW89_FLAG_CHANGING_INTERFACE, NUM_OF_RTW89_FLAGS, }; diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c index ecd603a881345..6587cdf6ba624 100644 --- a/drivers/net/wireless/realtek/rtw89/mac.c +++ b/drivers/net/wireless/realtek/rtw89/mac.c @@ -3600,6 +3600,13 @@ int rtw89_mac_set_macid_pause(struct rtw89_dev *rtwdev, u8 macid, bool pause) u8 grp = macid >> 5; int ret; + /* If this is called by change_interface() in the case of P2P, it could + * be power-off, so ignore this operation. + */ + if (test_bit(RTW89_FLAG_CHANGING_INTERFACE, rtwdev->flags) && + !test_bit(RTW89_FLAG_POWERON, rtwdev->flags)) + return 0; + ret = rtw89_mac_check_mac_en(rtwdev, RTW89_MAC_0, RTW89_CMAC_SEL); if (ret) return ret; diff --git a/drivers/net/wireless/realtek/rtw89/mac80211.c b/drivers/net/wireless/realtek/rtw89/mac80211.c index 6e79bf899901d..ce980d2f22c46 100644 --- a/drivers/net/wireless/realtek/rtw89/mac80211.c +++ b/drivers/net/wireless/realtek/rtw89/mac80211.c @@ -174,6 +174,9 @@ static int rtw89_ops_change_interface(struct ieee80211_hw *hw, enum nl80211_iftype type, bool p2p) { struct rtw89_dev *rtwdev = hw->priv; + int ret; + + set_bit(RTW89_FLAG_CHANGING_INTERFACE, rtwdev->flags); rtw89_debug(rtwdev, RTW89_DBG_STATE, "change vif %pM (%d)->(%d), p2p (%d)->(%d)\n", vif->addr, vif->type, type, vif->p2p, p2p); @@ -183,7 +186,13 @@ static int rtw89_ops_change_interface(struct ieee80211_hw *hw, vif->type = type; vif->p2p = p2p; - return rtw89_ops_add_interface(hw, vif); + ret = rtw89_ops_add_interface(hw, vif); + if (ret) + rtw89_warn(rtwdev, "failed to change interface %d\n", ret); + + clear_bit(RTW89_FLAG_CHANGING_INTERFACE, rtwdev->flags); + + return ret; } static void rtw89_ops_configure_filter(struct ieee80211_hw *hw,
During doing change_interface(), hardware is power-off, so some components are inaccessible and return error. This causes things unexpected, and we don't have a warning message for that. So, ignore some IO operations in this situation, and add a warning message to indicate something wrong. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> --- drivers/net/wireless/realtek/rtw89/core.h | 1 + drivers/net/wireless/realtek/rtw89/mac.c | 7 +++++++ drivers/net/wireless/realtek/rtw89/mac80211.c | 11 ++++++++++- 3 files changed, 18 insertions(+), 1 deletion(-)