linux-kernel - Re: [PATCH] ath10k: Register shutdown handler

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Date:   Tue, 18 Aug 2020 09:49:00 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Rakesh Pillai <pillair@...eaurora.org>
Cc:     ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Rakesh Pillai <pillair@...eaurora.org>
Subject: Re: [PATCH] ath10k: Register shutdown handler

Rakesh Pillai <pillair@...eaurora.org> wrote:

> As a part of device shutdown the smmu driver will be
> stopped and henceforth any IOVA address translation
> will not be done. The wlan driver, being one of the
> smmu driver consumer, should stop all the dma related
> activity as a part of shutdown, and thereby ensuring
> that no dma activity is done once the smmu driver
> shuts down.
> 
> During the device shutdown, the smmu calls shutdown
> for all its consumers in order to indicate them to
> stop all their dma activities.
> 
> Register the shutdown handler to stop the wlan
> driver and avoid any dma operations.
> 
> Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1
> 
> Signed-off-by: Rakesh Pillai <pillair@...eaurora.org>
> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

caf275463d37 ath10k: Register shutdown handler

-- 
https://patchwork.kernel.org/patch/11628291/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches