Re: [PATCH v2 3/5] drm/panel: of_drm_find_panel() return a counted reference

From: "Maxime Ripard" <mripard@kernel.org>
To: "Albert Esteve" <aesteve@redhat.com>
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Subject: Re: [PATCH v2 3/5] drm/panel: of_drm_find_panel() return a counted reference
Date: Fri, 17 Jul 2026 08:49:45 +0000	[thread overview]
Message-ID: <505844fbd2c5c8ab07153348d20b708c@kernel.org> (raw)
In-Reply-To: <20260713-drm_refcount_wiring-v2-3-d3bb61f4bd4d@redhat.com>

On Mon, 13 Jul 2026 13:53:06 +0200, Albert Esteve wrote:
> Callers of of_drm_find_panel() receive a pointer with no reference
> held, creating a window where the panel device can be unregistered
> and freed between the lookup and first use (e.g., drm_panel_prepare()).
> 
> Fix the lookup function by acquiring a reference with drm_panel_get()
> 
> [ ... ]

Acked-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime