linux-kernel - Re: [PATCH] drm/bridge: parade-ps8640: Make sure we drop the AUX mutex in the error case

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Message-ID: <CAD=FV=UsnDMx+TV3JCAmboTdFRtpOQzQ1V0cw70PadCoXVNJ_w@mail.gmail.com>
Date: Wed, 17 Jan 2024 12:09:37 -0800
From: Doug Anderson <dianders@...omium.org>
To: Hsin-Yi Wang <hsinyi@...omium.org>
Cc: dri-devel@...ts.freedesktop.org, Andrzej Hajda <andrzej.hajda@...el.com>, 
	Daniel Vetter <daniel@...ll.ch>, David Airlie <airlied@...il.com>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Jonas Karlman <jonas@...boo.se>, 
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Pin-yen Lin <treapking@...omium.org>, 
	Robert Foss <rfoss@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/bridge: parade-ps8640: Make sure we drop the AUX
 mutex in the error case

Hi,

On Wed, Jan 17, 2024 at 11:39 AM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> On Wed, Jan 17, 2024 at 10:35 AM Douglas Anderson <dianders@...omium.org> wrote:
> >
> > After commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge
> > is suspended in .post_disable()"), if we hit the error case in
> > ps8640_aux_transfer() then we return without dropping the mutex. Fix
> > this oversight.
> >
> > Fixes: 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge is suspended in .post_disable()")
> > Signed-off-by: Douglas Anderson <dianders@...omium.org>
> > ---
> > Sorry for missing this in my review! :( Given that this is really
> > simple and I'd rather the buggy commit not be there for long, if I can
> > get a quick Reviewed-by tag on this patch I'll land it without the
> > typical stewing period.
> >
>
> Reviewed-by: Hsin-Yi Wang <hsinyi@...omium.org>

Thanks! I've pushed this to avoid the breakage. If any additional
follow up comes up I'm happy to post additional patches.

a20f1b02bafc drm/bridge: parade-ps8640: Make sure we drop the AUX
mutex in the error case


-Doug