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SubjectRe: [PATCH] media: atomisp-mt9m114: Fix pointer dereferenced before checking
On Mon, May 30, 2022 at 03:58:01PM +0800, Haowen Bai wrote:
> The info->data is dereferencing before null checking, so move
> it after checking.
>
> Signed-off-by: Haowen Bai <baihaowen@meizu.com>
> ---
> drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
> index 00d6842c07d6..3c81ab73cdae 100644
> --- a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
> +++ b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
> @@ -616,13 +616,15 @@ static int mt9m114_get_intg_factor(struct i2c_client *client,
> struct camera_mipi_info *info,
> const struct mt9m114_res_struct *res)
> {
> - struct atomisp_sensor_mode_data *buf = &info->data;
> + struct atomisp_sensor_mode_data *buf;
> u32 reg_val;
> int ret;
>
> if (!info)
> return -EINVAL;
>
> + buf = &info->data;
> +
> ret = mt9m114_read_reg(client, MISENSOR_32BIT,
> REG_PIXEL_CLK, &reg_val);
> if (ret)
> --
> 2.7.4
>

Hi Haowen,
Looks good to me, thanks.

Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
--
Tommaso Merciai
Embedded Linux Engineer
tommaso.merciai@amarulasolutions.com
__________________________________

Amarula Solutions SRL
Via Le Canevare 30, 31100 Treviso, Veneto, IT
T. +39 042 243 5310
info@amarulasolutions.com
www.amarulasolutions.com

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