From: Zong-Zhe Yang <kevin_yang@realtek.com> stable inclusion from stable-5.10.80 commit 7d54f52d8fdb95eb4ca7c7c917186591edb56377 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit c5a8e90730a322f236731fc347dd3afa5db5550e ] When fw fifo dumps, RX clock gating should be disabled to avoid something unexpected. However, the register operation ran into a mistake. So, we fix it. Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210927111830.5354-1-pkshih@realtek.com Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Reviewed-by: Weilong Chen <chenweilong@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/net/wireless/realtek/rtw88/fw.c | 7 +++---- drivers/net/wireless/realtek/rtw88/reg.h | 1 + 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index 0452630bcfac..40bcfabd2d21 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -1421,12 +1421,10 @@ static void rtw_fw_read_fifo_page(struct rtw_dev *rtwdev, u32 offset, u32 size, u32 i; u16 idx = 0; u16 ctl; - u8 rcr; - rcr = rtw_read8(rtwdev, REG_RCR + 2); ctl = rtw_read16(rtwdev, REG_PKTBUF_DBG_CTRL) & 0xf000; /* disable rx clock gate */ - rtw_write8(rtwdev, REG_RCR, rcr | BIT(3)); + rtw_write32_set(rtwdev, REG_RCR, BIT_DISGCLK); do { rtw_write16(rtwdev, REG_PKTBUF_DBG_CTRL, start_pg | ctl); @@ -1445,7 +1443,8 @@ static void rtw_fw_read_fifo_page(struct rtw_dev *rtwdev, u32 offset, u32 size, out: rtw_write16(rtwdev, REG_PKTBUF_DBG_CTRL, ctl); - rtw_write8(rtwdev, REG_RCR + 2, rcr); + /* restore rx clock gate */ + rtw_write32_clr(rtwdev, REG_RCR, BIT_DISGCLK); } static void rtw_fw_read_fifo(struct rtw_dev *rtwdev, enum rtw_fw_fifo_sel sel, diff --git a/drivers/net/wireless/realtek/rtw88/reg.h b/drivers/net/wireless/realtek/rtw88/reg.h index aca3dbdc2d5a..9088bfb2a315 100644 --- a/drivers/net/wireless/realtek/rtw88/reg.h +++ b/drivers/net/wireless/realtek/rtw88/reg.h @@ -400,6 +400,7 @@ #define BIT_MFBEN BIT(22) #define BIT_DISCHKPPDLLEN BIT(21) #define BIT_PKTCTL_DLEN BIT(20) +#define BIT_DISGCLK BIT(19) #define BIT_TIM_PARSER_EN BIT(18) #define BIT_BC_MD_EN BIT(17) #define BIT_UC_MD_EN BIT(16) -- 2.20.1