linux-kernel - Re: [PATCH] media: imx-mipi-csis: Remove an incorrect fwnode_handle

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Message-ID: <20230831071547.GC2698@pendragon.ideasonboard.com>
Date:   Thu, 31 Aug 2023 10:15:47 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Rui Miguel Silva <rmfrfs@...il.com>,
        Martin Kepplinger <martink@...teo.de>,
        Purism Kernel Team <kernel@...i.sm>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] media: imx-mipi-csis: Remove an incorrect
 fwnode_handle_put() call

Hi Christophe,

Thank you for the patch.

On Wed, Aug 30, 2023 at 11:06:14PM +0200, Christophe JAILLET wrote:
> The commit in Fixes has removed an fwnode_graph_get_endpoint_by_id() call
> in mipi_csis_subdev_init().
> So the reference that was taken should not be released anymore in the
> error handling path of the probe and in the remove function.
> 
> Remove the now incorrect fwnode_handle_put() calls.
> 
> Fixes: 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode matching")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> ---
>  drivers/media/platform/nxp/imx-mipi-csis.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c
> index 16f19a640130..5f93712bf485 100644
> --- a/drivers/media/platform/nxp/imx-mipi-csis.c
> +++ b/drivers/media/platform/nxp/imx-mipi-csis.c
> @@ -1490,7 +1490,6 @@ static int mipi_csis_probe(struct platform_device *pdev)
>  	v4l2_async_unregister_subdev(&csis->sd);
>  err_disable_clock:
>  	mipi_csis_clk_disable(csis);
> -	fwnode_handle_put(csis->sd.fwnode);
>  
>  	return ret;
>  }
> @@ -1510,7 +1509,6 @@ static void mipi_csis_remove(struct platform_device *pdev)
>  	mipi_csis_clk_disable(csis);
>  	v4l2_subdev_cleanup(&csis->sd);
>  	media_entity_cleanup(&csis->sd.entity);
> -	fwnode_handle_put(csis->sd.fwnode);
>  	pm_runtime_set_suspended(&pdev->dev);
>  }
>  

-- 
Regards,

Laurent Pinchart