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

yongqiang.niu
2019-07-08T22:35:53Z

This patch add clock property check before get it

Signed-off-by: Yongqiang Niu <yongqiang.niu@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