linux-kernel - Re: [PATCH] drm/stm: Fix an error handling path in stm_drm_platform

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Date: Wed, 10 Jan 2024 10:54:25 +0100
From: Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Yannick Fertre
	<yannick.fertre@...s.st.com>,
        Philippe Cornu <philippe.cornu@...s.st.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard
	<mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie
	<airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Eric Anholt <eric@...olt.net>,
        Neil Armstrong <neil.armstrong@...aro.org>
CC: <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>,
        "Yannick Fertre" <yannick.fertre@...com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] drm/stm: Fix an error handling path in
 stm_drm_platform_probe()

Hi Christophe,

On 1/6/24 17:54, Christophe JAILLET wrote:
> If drm_dev_register() fails, a call to drv_load() must be undone, as
> already done in the remove function.
>
> Fixes: b759012c5fa7 ("drm/stm: Add STM32 LTDC driver")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> This was already sent a few years ago in [1] but it got no response.
> Since, there has been some activity on this driver, so I send it again.
>
> Note that it is untested.
>
> [1]: https://lore.kernel.org/all/20200501125511.132029-1-christophe.jaillet@wanadoo.fr/
> ---
>  drivers/gpu/drm/stm/drv.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
I tested it against stm32mp157c-dk2.dts.

Thanks for your submission.

Acked-by: Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>


Regards,

Raphaël Gallais-Pou