> -----Original Message-----
> From: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
> Sent: Tuesday, February 27, 2024 8:20 PM
> To: linux-wireless@xxxxxxxxxxxxxxx
> Cc: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
> Subject: [PATCH 3/4] wifi: rtw88: 8821c: Fix beacon loss and disconnect
>
> Tenda U9 V2.0, which contains RTL8811CU, is practically unusable because
> of frequent disconnections:
>
> Feb 23 14:46:45 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-BEACON-LOSS
> Feb 23 14:46:46 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-DISCONNECTED
> bssid=90:55:de:__:__:__ reason=4 locally_generated=1
>
> Feb 23 14:46:52 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-CONNECTED
> - Connection to 90:55:de:__:__:__ completed [id=0 id_str=]
> Feb 23 14:46:54 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-BEACON-LOSS
> Feb 23 14:46:55 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-DISCONNECTED
> bssid=90:55:de:__:__:__ reason=4 locally_generated=1
>
> Feb 23 14:47:01 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-CONNECTED
> - Connection to 90:55:de:__:__:__ completed [id=0 id_str=]
> Feb 23 14:47:04 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-BEACON-LOSS
> Feb 23 14:47:05 ideapad2 wpa_supplicant[427]: wlp3s0f3u2: CTRL-EVENT-DISCONNECTED
> bssid=90:55:de:__:__:__ reason=4 locally_generated=1
>
> This is caused by a mistake in the chip initialisation. This version of
> the chip requires loading an extra AGC table right after the main one,
> but the extra table is being loaded at the wrong time.
Thanks for the finding. The rtw_chip_board_info_setup() can only do "software"
things, and rtw_phy_load_tables() can really do IO. Add this to commit message
if you think this can be clear.
>
> Move the extra AGC table loading to the right place.
>
> Fixes: 5d6651fe8583 ("rtw88: 8821c: support RFE type2 wifi NIC")
> Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
