[PATCH 1/2] drm/bridge: sii902x: re-order conditions to prevent out of bounds read

[Andrzej Hajda]

On 07.06.2019 09:27, Dan Carpenter wrote:
> This should check that "i" is within bounds before checking reading from
> the array.
>
> Fixes: ff5781634c41 ("drm/bridge: sii902x: Implement HDMI audio support")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>


Reviewed-by: Andrzej Hajda <a.hajda at samsung.com>

 --
Regards
Andrzej


> ---
>  drivers/gpu/drm/bridge/sii902x.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> index d6f98d388ac2..6b03616d6bc3 100644
> --- a/drivers/gpu/drm/bridge/sii902x.c
> +++ b/drivers/gpu/drm/bridge/sii902x.c
> @@ -589,8 +589,8 @@ static int sii902x_audio_hw_params(struct device *dev, void *data,
>  	if (ret)
>  		goto out;
>  
> -	for (i = 0; sii902x->audio.i2s_fifo_sequence[i] &&
> -		     i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence); i++)
> +	for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) &&
> +		    sii902x->audio.i2s_fifo_sequence[i]; i++)
>  		regmap_write(sii902x->regmap,
>  			     SII902X_TPI_I2S_ENABLE_MAPPING_REG,
>  			     sii902x->audio.i2s_fifo_sequence[i]);