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From: Andrey Skvortsov <andrej.skvortzov@gmail.com>
To: Dan Carpenter <error27@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>,
	Paul Kocialkowski <paulk@sys-base.io>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Chen-Yu Tsai <wens@kernel.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	Hans Verkuil <hverkuil@kernel.org>,
	linux-media@vger.kernel.org, linux-staging@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] media: cedrus: Fix missing cleanup in error path
Date: Tue, 7 Apr 2026 00:23:19 +0300	[thread overview]
Message-ID: <adQkRxR9gmAPHnYI@skv.local> (raw)
In-Reply-To: <ac5qhwdZLNe628eW@stanley.mountain>

Hi,

On 26-04-02 16:09, Dan Carpenter wrote:
> On Wed, Apr 01, 2026 at 10:14:40PM +0300, Andrey Skvortsov wrote:
> > From: Samuel Holland <samuel@sholland.org>
> > 
> > From: Samuel Holland <samuel@sholland.org>
> > 
> > According to the documentation struct v4l2_fh has to be cleaned up with
> > v4l2_fh_exit() before being freed. [1]
> > 
> > 1. https://docs.kernel.org/driver-api/media/v4l2-fh.html
> > 
> 
> I wish the commit message would say what the use visible effect of the
> bug is.  I looked at it and I don't think this patch hurts but I also
> didn't necessarily see a that the original code had a user visible bug.
> 
> I read the documentation but it wasn't as unambiguous as I'd prefer.
> 

Thank you for the review. Currently there is no visible
bug. v4l2_fh_exit() in this case only destroys mutex.
But it may change in the future, when v4l2_fh_init/v4l2_fh_exit will
be changed. I think the change maybe useful in this regard.

I'll describe this in the commit message in v2 and resend it separately from the
patch 2, that fixes actual problem. So this change may be skipped, if
maintainers think it's not worth to apply.

-- 
Best regards,
Andrey Skvortsov


      reply	other threads:[~2026-04-06 21:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-01 19:14 [PATCH 1/2] media: cedrus: Fix missing cleanup in error path Andrey Skvortsov
2026-04-01 19:14 ` [PATCH 2/2] media: cedrus: Fix failure to clean up hardware on probe failure Andrey Skvortsov
2026-04-02 13:00   ` Dan Carpenter
2026-04-06 21:31     ` Andrey Skvortsov
2026-04-02 13:09 ` [PATCH 1/2] media: cedrus: Fix missing cleanup in error path Dan Carpenter
2026-04-06 21:23   ` Andrey Skvortsov [this message]

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