[PATCH] drm/amd/powerplay: fix a signedness bugs

[jinhuieric.huang@xxxxxxx (Eric Huang)]

Reviewed-by: Eric Huang <JinHuiEric.Huang at amd.com>


On 2017-05-16 10:42 AM, Dan Carpenter wrote:
> Smatch complains about a signedness bug here:
>
> 	vega10_hwmgr.c:4202 vega10_force_clock_level()
> 	warn: always true condition '(i >= 0) => (0-u32max >= 0)'
>
> Fixes: 7b52db39a4c2 ("drm/amd/powerplay: fix bug sclk/mclk level can't be set on vega10.")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
>
> diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
> index ad30f5d3a10d..2614af2f553f 100644
> --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
> @@ -4186,7 +4186,7 @@ static int vega10_force_clock_level(struct pp_hwmgr *hwmgr,
>   		enum pp_clock_type type, uint32_t mask)
>   {
>   	struct vega10_hwmgr *data = (struct vega10_hwmgr *)(hwmgr->backend);
> -	uint32_t i;
> +	int i;
>   
>   	if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL)
>   		return -EINVAL;