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From:   Enric Balletbo i Serra <enric.balletbo@collabora.com>
To:     robh+dt@kernel.org, mark.rutland@arm.com, ck.hu@mediatek.com,
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Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>, rdunlap@infradead.org,
        dri-devel@lists.freedesktop.org, Weiyi Lu <weiyi.lu@mediatek.com>,
        Seiya Wang <seiya.wang@mediatek.com>,
        linux-clk@vger.kernel.org,
        Collabora Kernel ML <kernel@collabora.com>,
        mtk01761 <wendell.lin@mediatek.com>,
        Allison Randal <allison@lohutok.net>,
        Thomas Gleixner <tglx@linutronix.de>, wens@csie.org,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Houlong Wei <houlong.wei@mediatek.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        linux-media@vger.kernel.org, devicetree@vger.kernel.org,
        sean.wang@mediatek.com, frank-w@public-files.de,
        Minghsiu Tsai <minghsiu.tsai@mediatek.com>,
        Andrew-CT Chen <andrew-ct.chen@mediatek.com>,
        linux-mediatek@lists.infradead.org, hsinyi@chromium.org,
        Matthias Brugger <mbrugger@suse.com>,
        linux-arm-kernel@lists.infradead.org,
        Richard Fontana <rfontana@redhat.com>,
        linux-kernel@vger.kernel.org, matthias.bgg@kernel.org,
        Daniel Vetter <daniel@ffwll.ch>
Subject: [PATCH v8 3/6] media: mtk-mdp: Check return value of of_clk_get
Date:   Thu, 20 Feb 2020 18:21:44 +0100
Message-Id: <20200220172147.919996-4-enric.balletbo@collabora.com>
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From: Matthias Brugger <mbrugger@suse.com>

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: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

Changes in v8: None
Changes in v7:
- Fix check of return value of of_clk_get
- Fix identation

 drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
index 0c4788af78dd..58abfbdfb82d 100644
--- 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)
-- 
2.25.0