linux-kernel - RE: [EXT] Re: [PATCH v2] wifi: mwifiex: avoid AP and STA running on different channel

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Message-ID:
 <PA4PR04MB9638EC10C0B656B750D922ADD1922@PA4PR04MB9638.eurprd04.prod.outlook.com>
Date: Mon, 2 Sep 2024 10:35:01 +0000
From: David Lin <yu-hao.lin@....com>
To: Sascha Hauer <s.hauer@...gutronix.de>
CC: "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"briannorris@...omium.org" <briannorris@...omium.org>, "kvalo@...nel.org"
	<kvalo@...nel.org>, "francesco@...cini.it" <francesco@...cini.it>, Pete Hsieh
	<tsung-hsien.hsieh@....com>
Subject: RE: [EXT] Re: [PATCH v2] wifi: mwifiex: avoid AP and STA running on
 different channel

> From: Sascha Hauer <s.hauer@...gutronix.de>
> Sent: Monday, September 2, 2024 5:38 PM
> To: David Lin <yu-hao.lin@....com>
> Cc: linux-wireless@...r.kernel.org; linux-kernel@...r.kernel.org;
> briannorris@...omium.org; kvalo@...nel.org; francesco@...cini.it; Pete
> Hsieh <tsung-hsien.hsieh@....com>
> Subject: [EXT] Re: [PATCH v2] wifi: mwifiex: avoid AP and STA running on
> different channel
>
> On Mon, Sep 02, 2024 at 04:43:11PM +0800, David Lin wrote:
> > Current firmware doesn't support AP and STA running on different
> > channels simultaneously.
>
> As mentioned here:
>
> https://lore.kern/
> el.org%2Fall%2FZtGnWC7SPHt7Vbbp%40pengutronix.de%2F&data=05%7C02%
> 7Cyu-hao.lin%40nxp.com%7Cce9b7d4e417c41113c7d08dccb32fc49%7C686ea
> 1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638608667089710854%7CUnkn
> own%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1h
> aWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=nMZO565xCUO%2BwxD4tIfi
> w6cGyYrinaEsi7XLfqyxgXg%3D&reserved=0
>
> AP and STA can indeed have different channels when DRCS is enabled, so I
> think you have to check this in your patch.
>
> Maybe the same question here again: Wouldn't it make sense to enable DRCS
> by default?
>
> Sascha
>

I will look into DRCS support later after current tasks on hand.
This patch is a quick fix to avoid firmware crash in the specific scenario.

David