RX full flags are raised if certain types of RX FIFO are full, and then drop all following MPDU of AMPDU. In order to resume to receive MPDU when RX FIFO becomes available, we clear the register bits by the commit a0d99ebb3ecd ("wifi: rtw89: initialize DMA of CMAC"). But, 8852AE needs more settings to support this. To quickly fix disconnection problem, revert the behavior as before.

Fixes: a0d99ebb3ecd ("wifi: rtw89: initialize DMA of CMAC") Reported-by: Damian B bronecki.damian@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217710 Cc: Stable@vger.kernel.org Signed-off-by: Ping-Ke Shih pkshih@realtek.com Tested-by: Damian B bronecki.damian@gmail.com --- v2: - fix commit message typo - collect Damian's Tested-by --- drivers/net/wireless/realtek/rtw89/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c index 1efa4da3cebc..cebefa3b1db3 100644 --- a/drivers/net/wireless/realtek/rtw89/mac.c +++ b/drivers/net/wireless/realtek/rtw89/mac.c @@ -2524,7 +2524,7 @@ static int cmac_dma_init(struct rtw89_dev *rtwdev, u8 mac_idx) u32 reg; int ret;

- if (chip_id != RTL8852A && chip_id != RTL8852B) + if (chip_id != RTL8852B) return 0;

ret = rtw89_mac_check_mac_en(rtwdev, mac_idx, RTW89_CMAC_SEL);