[PATCH 5.4 050/102] rtw88: fix error handling when setup efuse info

Greg Kroah-Hartman
2020-01-24T09:40:01Z

From: Ping-Ke Shih <pkshih@realtek.com>

commit f4268729eb1eefe23f6746849c1b5626d9030532 upstream.

Disable efuse if the efuse is enabled when we failed to setup the efuse
information, otherwise the hardware will not turn off.

Fixes: e3037485c68e ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/realtek/rtw88/main.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -1048,19 +1048,19 @@ static int rtw_chip_efuse_info_setup(str
/* power on mac to read efuse */
ret = rtw_chip_efuse_enable(rtwdev);
if (ret)
- goto out;
+ goto out_unlock;

ret = rtw_parse_efuse_map(rtwdev);
if (ret)
- goto out;
+ goto out_disable;

ret = rtw_dump_hw_feature(rtwdev);
if (ret)
- goto out;
+ goto out_disable;

ret = rtw_check_supported_rfe(rtwdev);
if (ret)
- goto out;
+ goto out_disable;

if (efuse->crystal_cap == 0xff)
efuse->crystal_cap = 0;
@@ -1087,9 +1087,10 @@ static int rtw_chip_efuse_info_setup(str
efuse->ext_pa_5g = efuse->pa_type_5g & BIT(0) ? 1 : 0;
efuse->ext_lna_2g = efuse->lna_type_5g & BIT(3) ? 1 : 0;

+out_disable:
rtw_chip_efuse_disable(rtwdev);

-out:
+out_unlock:
mutex_unlock(&rtwdev->mutex);
return ret;
}