[PATCH] dc.c:use kzalloc without test

[Harry Wentland]

On 2019-10-23 4:32 a.m., zhongshiqi wrote:
> dc.c:583:null check is needed after using kzalloc function
> 
> Signed-off-by: zhongshiqi <zhong.shiqi at zte.com.cn>

Reviewed-by: Harry Wentland <harry.wentland at amd.com>

Harry

> ---
>  drivers/gpu/drm/amd/display/dc/core/dc.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> index 5d1aded..4b8819c 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
> @@ -580,6 +580,10 @@ static bool construct(struct dc *dc,
>  #ifdef CONFIG_DRM_AMD_DC_DCN2_0
>  	// Allocate memory for the vm_helper
>  	dc->vm_helper = kzalloc(sizeof(struct vm_helper), GFP_KERNEL);
> +	if (!dc->vm_helper) {
> +		dm_error("%s: failed to create dc->vm_helper\n", __func__);
> +		goto fail;
> +	}
>  
>  #endif
>  	memcpy(&dc->bb_overrides, &init_params->bb_overrides, sizeof(dc->bb_overrides));
>