Re: [PATCH v2 1/2] wifi: rtw88: 8822c: Fix reported RX band width

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2024-07-22 at 13:50 +0300, Bitterblue Smith wrote:
> "iw dev wlp2s0 station dump" shows incorrect rx bitrate:
> 
> tx bitrate:     866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
> rx bitrate:     86.7 MBit/s VHT-MCS 9 VHT-NSS 1
> 
> This is because the RX band width is calculated incorrectly. Fix the
> calculation according to the phydm_rxsc_2_bw() function from the
> official drivers.
> 
> After:
> 
> tx bitrate:     866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
> rx bitrate:     390.0 MBit/s VHT-MCS 9 80MHz VHT-NSS 1
> 
> It also works correctly with the AP configured for 20 MHz and 40 MHz.
> 
> Tested with RTL8822CE.
> 
> Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver")
> Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
> ---
> v2:
>  - Use Fixes instead of Cc: stable.
> 

For the record, if you want it backported, you really should have
_both_. Having the Fixes: is good, but will not necessarily lead to it
being backported when/where you want it.

johannes