@@ -47,7 +47,7 @@ static int rtw8821c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
map = (struct rtw8821c_efuse *)log_map;
- efuse->rfe_option = map->rfe_option;
+ efuse->rfe_option = map->rfe_option & 0x1f;
efuse->rf_board_option = map->rf_board_option;
efuse->crystal_cap = map->xtal_k;
efuse->pa_type_2g = map->pa_type;
@@ -1537,7 +1537,6 @@ static const struct rtw_rfe_def rtw8821c_rfe_defs[] = {
[2] = RTW_DEF_RFE_EXT(8821c, 0, 0, 2),
[4] = RTW_DEF_RFE_EXT(8821c, 0, 0, 2),
[6] = RTW_DEF_RFE(8821c, 0, 0),
- [34] = RTW_DEF_RFE(8821c, 0, 0),
};
static struct rtw_hw_reg rtw8821c_dig[] = {
On my RTW8821CU chipset rfe_option reads as 0x22. Looking at the downstream driver suggests that the field width of rfe_option is 5 bit, so rfe_option should be masked with 0x1f. Without this the rfe_option comparisons with 2 further down the driver evaluate as false when they should really evaluate as true. The effect is that 2G channels do not work. rfe_option is also used as an array index into rtw8821c_rfe_defs[]. rtw8821c_rfe_defs[34] (0x22) was added as part of adding USB support, likely because rfe_option reads as 0x22. As this now becomes 0x2, rtw8821c_rfe_defs[34] is no longer used and can be removed. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- drivers/net/wireless/realtek/rtw88/rtw8821c.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)