Hi, Yongqiang: On Thu, 2019-08-29 at 22:50 +0800, yongqiang.niu@xxxxxxxxxxxx wrote: > From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> > > This patch add clock property check before get it > I've rewrite this patch and applied to mediatek-drm-next-5.5 [1] with the title "drm/mediatek: add no_clk into ddp private data", thanks. [1] https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-next-5.5 Regards, CK > Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> > --- > 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 a5a6689..effc24a 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > @@ -657,10 +657,12 @@ 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);
