linux-kernel - Re: [PATCH 2/2] media: i2c: imx258: validate rotation only if it is provided

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Date:   Wed, 28 Oct 2020 10:23:43 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] media: i2c: imx258: validate rotation only if it is
 provided

On Mon, Oct 05, 2020 at 05:15:59PM +0200, Krzysztof Kozlowski wrote:
> The sensor supports rotation by 180 degrees however the value of
> "rotation" property should be validated only if it exists.  If
> "rotation" is missing, do not fail the probe:
> 
>     imx258: probe of 3-001a failed with error -22
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

This is actually a fix, so these should be added:
Fixes: 17121d12a5c1 ("media: imx258: Check the rotation property has a value of 180")
Cc: <stable@...r.kernel.org>

Best regards,
Krzysztof

> ---
>  drivers/media/i2c/imx258.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
> index aedf8e7c6165..c52932e5b881 100644
> --- a/drivers/media/i2c/imx258.c
> +++ b/drivers/media/i2c/imx258.c
> @@ -1284,7 +1284,7 @@ static int imx258_probe(struct i2c_client *client)
>  	 * supports a single pixel order right now.
>  	 */
>  	ret = device_property_read_u32(&client->dev, "rotation", &val);
> -	if (ret || val != 180)
> +	if (!ret && val != 180)
>  		return -EINVAL;
>  
>  	/* Initialize subdev */
> -- 
> 2.17.1
>