[PATCH v4, 25/33] drm/mediatek: add clock property check before get it

[yongqiang.niu]

From: Yongqiang Niu <yongqiang....@mediatek.com>

This patch add clock property check before get it

Signed-off-by: Yongqiang Niu <yongqiang....@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c 
b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index c57e7ab..a9d3e27 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -668,10 +668,12 @@ static int mtk_ddp_probe(struct platform_device *pdev)
        for (i = 0; i < 10; i++)
                ddp->mutex[i].id = i;
 
-       ddp->clk = devm_clk_get(dev, NULL);
-       if (IS_ERR(ddp->clk)) {
-               dev_err(dev, "Failed to get clock\n");
-               return PTR_ERR(ddp->clk);
+       if (of_find_property(dev->of_node, "clocks", &i)) {
+               ddp->clk = devm_clk_get(dev, NULL);
+               if (IS_ERR(ddp->clk)) {
+                       dev_err(dev, "Failed to get clock\n");
+                       return PTR_ERR(ddp->clk);
+               }
        }
 
        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- 
1.8.1.1.dirty