media: mtk-mdp: Check return value of of_clk_get

Check the return value of of_clk_get and print an error
message if not EPROBE_DEFER.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
index 9afe8161a8c00e8dd6d0b4a715342a26b65fbdca..14991685adb78a74b0a3aa1741bf442bb23b2571 100644 (file)
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
@@ -110,6 +110,12 @@ int mtk_mdp_comp_init(struct device *dev, struct device_node *node,
 
        for (i = 0; i < ARRAY_SIZE(comp->clk); i++) {
                comp->clk[i] = of_clk_get(node, i);
+               if (IS_ERR(comp->clk[i])) {
+                       if (PTR_ERR(comp->clk[i]) != -EPROBE_DEFER)
+                               dev_err(dev, "Failed to get clock\n");
+
+                       return PTR_ERR(comp->clk[i]);
+               }
 
                /* Only RDMA needs two clocks */
                if (comp->type != MTK_MDP_RDMA)