ASoC: mediatek: Check for error clk pointer

Yes, you are right and now the return code depending on the
init_clks().

Fixes: 6078c651947a ("soc: mediatek: Refine scpsys to support multiple platform")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20211222015157.1025853-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index ca75b14..670cc82 100644 (file)
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -411,12 +411,17 @@ out:
        return ret;
 }
 
-static void init_clks(struct platform_device *pdev, struct clk **clk)
+static int init_clks(struct platform_device *pdev, struct clk **clk)
 {
        int i;
 
-       for (i = CLK_NONE + 1; i < CLK_MAX; i++)
+       for (i = CLK_NONE + 1; i < CLK_MAX; i++) {
                clk[i] = devm_clk_get(&pdev->dev, clk_names[i]);
+               if (IS_ERR(clk[i]))
+                       return PTR_ERR(clk[i]);
+       }
+
+       return 0;
 }
 
 static struct scp *init_scp(struct platform_device *pdev,
@@ -426,7 +431,7 @@ static struct scp *init_scp(struct platform_device *pdev,
 {
        struct genpd_onecell_data *pd_data;
        struct resource *res;
-       int i, j;
+       int i, j, ret;
        struct scp *scp;
        struct clk *clk[CLK_MAX];
 
@@ -481,7 +486,9 @@ static struct scp *init_scp(struct platform_device *pdev,
 
        pd_data->num_domains = num;
 
-       init_clks(pdev, clk);
+       ret = init_clks(pdev, clk);
+       if (ret)
+               return ERR_PTR(ret);
 
        for (i = 0; i < num; i++) {
                struct scp_domain *scpd = &scp->domains[i];