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Fri, 30 Aug 2019 14:11:47 +0800 Message-ID: <1567145502.5942.15.camel@mtksdaap41> Subject: Re: [PATCH v5, 24/32] drm/mediatek: add clock property check before get it From: CK Hu To: Date: Fri, 30 Aug 2019 14:11:42 +0800 In-Reply-To: <1567090254-15566-25-git-send-email-yongqiang.niu@mediatek.com> References: <1567090254-15566-1-git-send-email-yongqiang.niu@mediatek.com> <1567090254-15566-25-git-send-email-yongqiang.niu@mediatek.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: AC63B56FAA0B5FFE3064F062EFE487F75FF6A0918ACADC649B94CFF7E07E14872000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190829_231154_514047_77CCCBB6 X-CRM114-Status: GOOD ( 15.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Philipp Zabel , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Rob Herring , linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Yongqiang: On Thu, 2019-08-29 at 22:50 +0800, yongqiang.niu@mediatek.com wrote: > From: Yongqiang Niu > > This patch add clock property check before get it > > Signed-off-by: Yongqiang Niu > --- > 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); > + } Only "mediatek,mt8133-disp-mutex" has no clock property. For other SoC, clock property is required. So I think this exception is just for mt8183. Regards, CK > } > > regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel