> RX full flags are raised if certain types of RX FIFO are full, and then
> drop all following MSDU of APMDU. In order to resume to receive MSDU
> when RX FIFO becomes available, we clear the regitster 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@xxxxxxxxx>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217710
> Cc: <Stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
This patch fixed connection drops for me. Thanks!
Tested-by: Damian B <bronecki.damian@xxxxxxxxx>
> ---
> 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);
> --
> 2.25.1
>
