linux-kernel - [PATCH v4--to=ulrich.hecht+renesas@...il.com 5/5] drm: mediatek: Omit warning on probe defers

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Message-Id: <20180717215951.378-6-matthias.bgg@kernel.org>
Date:   Tue, 17 Jul 2018 23:59:51 +0200
From:   matthias.bgg@...nel.org
To:     laurent.pinchart@...asonboard.com, ck.hu@...iatek.com,
        p.zabel@...gutronix.de, airlied@...ux.ie, robh+dt@...nel.org,
        mark.rutland@....com, mturquette@...libre.com,
        sboyd@...eaurora.org, lee.jones@...aro.org
Cc:     davem@...emloft.net, gregkh@...uxfoundation.org,
        mchehab@...nel.org, rdunlap@...radead.org,
        pi-cheng.chen@...aro.org, sean.wang@...iatek.com,
        linux-clk@...r.kernel.org, linux@...linux.org.uk,
        matthias.bgg@...il.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Matthias Brugger <mbrugger@...e.com>
Subject: [PATCH v4--to=ulrich.hecht+renesas@...il.com 5/5] drm: mediatek: Omit warning on probe defers

From: Matthias Brugger <mbrugger@...e.com>

It can happen that the clock drivers wasn't probed before the
ddp driver gets invoked. The driver used to omit a warning
that the driver failed to get the clocks. Omit this error on
the defered probe path.

Signed-off-by: Matthias Brugger <mbrugger@...e.com>
Acked-by: CK Hu <ck.hu@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index bafc5c77c4fb..6b399348a2dc 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -374,7 +374,8 @@ static int mtk_ddp_probe(struct platform_device *pdev)
 
 	ddp->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(ddp->clk)) {
-		dev_err(dev, "Failed to get clock\n");
+		if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get clock\n");
 		return PTR_ERR(ddp->clk);
 	}
 
-- 
2.17.1