[PATCH -next] [media] vcodec: mediatek: Fix return value check in mtk_vcodec_init_enc_pm()

[tiffany lin]

Reviewed-by:Tiffany Lin <tiffany.lin at mediatek.com>

On Tue, 2016-07-12 at 11:02 +0000, weiyj_lk at 163.com wrote:
> From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
> 
> In case of error, the function devm_clk_get() returns ERR_PTR()
> and not returns NULL. The NULL test in the return value check
> should be replaced with IS_ERR().
> 
> Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
> ---
>  drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> index 2379e97..3e73e9d 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> @@ -67,27 +67,27 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
>  	pm->dev = &pdev->dev;
>  
>  	pm->vencpll_d2 = devm_clk_get(&pdev->dev, "venc_sel_src");
> -	if (pm->vencpll_d2 == NULL) {
> +	if (IS_ERR(pm->vencpll_d2)) {
>  		mtk_v4l2_err("devm_clk_get vencpll_d2 fail");
> -		ret = -1;
> +		ret = PTR_ERR(pm->vencpll_d2);
>  	}
>  
>  	pm->venc_sel = devm_clk_get(&pdev->dev, "venc_sel");
> -	if (pm->venc_sel == NULL) {
> +	if (IS_ERR(pm->venc_sel)) {
>  		mtk_v4l2_err("devm_clk_get venc_sel fail");
> -		ret = -1;
> +		ret = PTR_ERR(pm->venc_sel);
>  	}
>  
>  	pm->univpll1_d2 = devm_clk_get(&pdev->dev, "venc_lt_sel_src");
> -	if (pm->univpll1_d2 == NULL) {
> +	if (IS_ERR(pm->univpll1_d2)) {
>  		mtk_v4l2_err("devm_clk_get univpll1_d2 fail");
> -		ret = -1;
> +		ret = PTR_ERR(pm->univpll1_d2);
>  	}
>  
>  	pm->venc_lt_sel = devm_clk_get(&pdev->dev, "venc_lt_sel");
> -	if (pm->venc_lt_sel == NULL) {
> +	if (IS_ERR(pm->venc_lt_sel)) {
>  		mtk_v4l2_err("devm_clk_get venc_lt_sel fail");
> -		ret = -1;
> +		ret = PTR_ERR(pm->venc_lt_sel);
>  	}
>  
>  	return ret;
> 
>