Re: [PATCH] drm/mediatek: Keep the mutex node reference across deferred binds

[CK Hu (胡俊光)]

On Fri, 2026-11-06 at 17:20 +0800, Yige Jiang wrote:
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> 
> mtk_drm_probe() acquires private->mutex_node and releases that reference
> on probe failure or in mtk_drm_remove(). The component bind callback does
> not acquire another reference, so it must not put the node when the mutex
> platform device is not available.
> 
> If this bind failure propagates through component_master_add_with_match(),
> the probe error path puts the same reference again. A bind attempted after
> probe has returned can also leave the stored node without its reference
> for a later bind or remove.
> 
> Remove the bind-time put and leave the node reference with its probe/remove
> owner.

Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>

> 
> Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Yige Jiang <yigejiang86@xxxxxxxxx>
> ---