linux-kernel - [PATCH] drm: rcar-du: EPROBE_DEFER case doesn't need error message

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Date:	Tue, 24 May 2016 14:24:09 +0900
From:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	David Airlie <airlied@...ux.ie>
CC:	<dri-devel@...ts.freedesktop.org>,
	<linux-renesas-soc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <koji.matsuoka.xm@...esas.com>,
	<yoshihiro.shimoda.uh@...esas.com>, <naoya.shiiba.nx@...esas.com>,
	<ryo.kodama.vz@...esas.com>, <hiroyuki.yokoyama.vx@...esas.com>,
	<yoshifumi.hosoya.wj@...esas.com>, <takeshi.kihara.df@...esas.com>,
	<toshiaki.komatsu.ud@...esas.com>,
	<harunobu.kurokawa.dn@...esas.com>,
	<ryusuke.sakato.bx@...esas.com>, <tomoharu.fukawa.eb@...esas.com>,
	<kouei.abe.cp@...esas.com>, <khiem.nguyen.xt@....renesas.com>,
	<hien.dang.eb@....renesas.com>
Subject: [PATCH] drm: rcar-du: EPROBE_DEFER case doesn't need error message


From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>

EPROBE_DEFER is not error, thus, error message on kernel log on this
case is confusable for user. Prints it only error cases.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 26fd3ba..1db080c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -354,14 +354,16 @@ static int rcar_du_probe(struct platform_device *pdev)
 	 */
 	ret = drm_vblank_init(ddev, (1 << rcdu->info->num_crtcs) - 1);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to initialize vblank\n");
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to initialize vblank\n");
 		goto error;
 	}
 
 	/* DRM/KMS objects */
 	ret = rcar_du_modeset_init(rcdu);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret);
 		goto error;
 	}
 
-- 
1.9.1