linux-kernel - Re: [PATCH AUTOSEL 5.14 132/252] ALSA: pci: cs46xx: Fix set up buffer type properly

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Date:   Thu, 09 Sep 2021 13:53:02 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        alsa-devel@...a-project.org
Subject: Re: [PATCH AUTOSEL 5.14 132/252] ALSA: pci: cs46xx: Fix set up buffer type properly

On Thu, 09 Sep 2021 13:39:06 +0200,
Sasha Levin wrote:
> 
> From: Takashi Iwai <tiwai@...e.de>
> 
> [ Upstream commit 4d9e9153f1c64d91a125c6967bc0bfb0bb653ea0 ]
> 
> CS46xx driver switches the buffer depending on the number of periods,
> and in some cases it switches to the own buffer without updating the
> buffer type properly.  This may cause a problem with the mmap on
> exotic architectures that require the own mmap call for the coherent
> DMA buffer.
> 
> This patch addresses the potential breakage by replacing the buffer
> setup with the proper macro.  It also simplifies the source code,
> too.
> 
> Link: https://lore.kernel.org/r/20210809071829.22238-4-tiwai@suse.de
> Signed-off-by: Takashi Iwai <tiwai@...e.de>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

This change is superfluous for 5.14.  Please drop.


thanks,

Takashi