linux-kernel - Re: [PATCH] drm/mediatek: Fix refcounting in mtk_drm_get_all_drm

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Message-ID: <6ad27d61-5907-437b-afda-6e1453a19f88@collabora.com>
Date: Fri, 3 Oct 2025 10:20:02 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Sjoerd Simons <sjoerd@...labora.com>,
 Chun-Kuang Hu <chunkuang.hu@...nel.org>,
 Philipp Zabel <p.zabel@...gutronix.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Matthias Brugger <matthias.bgg@...il.com>,
 CK Hu <ck.hu@...iatek.com>, Johan Hovold <johan@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 kernel@...labora.com, stable@...r.kernel.org
Subject: Re: [PATCH] drm/mediatek: Fix refcounting in mtk_drm_get_all_drm_priv

Il 03/10/25 10:08, Sjoerd Simons ha scritto:
> dev_get_drvdata simply returns the driver data part of drm_dev, which
> has its lifetime bound to the drm_dev. So only drop the reference in the
> error paths, on success they will get dropped later.
> 
> Cc: stable@...r.kernel.org
> Fixes: 9ba2556cef1df ("drm/mediatek: clean up driver data initialisation")
> Signed-off-by: Sjoerd Simons <sjoerd@...labora.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>