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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,
	p.zabel@pengutronix.de, airlied@linux.ie,
	mturquette@baylibre.com, sboyd@kernel.org,
	ulrich.hecht+renesas@gmail.com,
	laurent.pinchart@ideasonboard.com
Cc: Allison Randal <allison@lohutok.net>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	wens@csie.org, linux-media@vger.kernel.org,
	sean.wang@mediatek.com, hsinyi@chromium.org,
	rdunlap@infradead.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Kate Stewart <kstewart@linuxfoundation.org>,
	dri-devel@lists.freedesktop.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Weiyi Lu <weiyi.lu@mediatek.com>,
	Seiya Wang <seiya.wang@mediatek.com>,
	Matthias Brugger <mbrugger@suse.com>,
	Andrew-CT Chen <andrew-ct.chen@mediatek.com>,
	linux-clk@vger.kernel.org, linux-mediatek@lists.infradead.org,
	Daniel Vetter <daniel@ffwll.ch>,
	linux-arm-kernel@lists.infradead.org, matthias.bgg@kernel.org,
	Minghsiu Tsai <minghsiu.tsai@mediatek.com>,
	frank-w@public-files.de, devicetree@vger.kernel.org,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Collabora Kernel ML <kernel@collabora.com>,
	Houlong Wei <houlong.wei@mediatek.com>,
	linux-kernel@vger.kernel.org, mtk01761 <wendell.lin@mediatek.com>,
	Richard Fontana <rfontana@redhat.com>
Subject: [PATCH v12 1/5] drm/mediatek: Omit warning on probe defers
Date: Wed, 11 Mar 2020 17:53:18 +0100
Message-ID: <20200311165322.1594233-2-enric.balletbo@collabora.com> (raw)
In-Reply-To: <20200311165322.1594233-1-enric.balletbo@collabora.com>

From: Matthias Brugger <mbrugger@suse.com>

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

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

Changes in v12: None
Changes in v10: None
Changes in v9: None
Changes in v8: None
Changes in v7: None

 drivers/gpu/drm/mediatek/mtk_disp_color.c |  5 ++++-
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c   |  5 ++++-
 drivers/gpu/drm/mediatek/mtk_disp_rdma.c  |  5 ++++-
 drivers/gpu/drm/mediatek/mtk_dpi.c        | 12 +++++++++---
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c    |  3 ++-
 drivers/gpu/drm/mediatek/mtk_dsi.c        |  8 ++++++--
 drivers/gpu/drm/mediatek/mtk_hdmi.c       |  4 +++-
 7 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_color.c b/drivers/gpu/drm/mediatek/mtk_disp_color.c
index 6fb0d6983a4a..3ae9c810845b 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_color.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_color.c
@@ -119,7 +119,10 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_color_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index 891d80c73e04..28651bc579bc 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -386,7 +386,10 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_ovl_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
index 0cb848d64206..e04319fedf46 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
@@ -294,7 +294,10 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_rdma_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 01fa8b8d763d..1b219edef541 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -701,21 +701,27 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	dpi->engine_clk = devm_clk_get(dev, "engine");
 	if (IS_ERR(dpi->engine_clk)) {
 		ret = PTR_ERR(dpi->engine_clk);
-		dev_err(dev, "Failed to get engine clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get engine clock: %d\n", ret);
+
 		return ret;
 	}
 
 	dpi->pixel_clk = devm_clk_get(dev, "pixel");
 	if (IS_ERR(dpi->pixel_clk)) {
 		ret = PTR_ERR(dpi->pixel_clk);
-		dev_err(dev, "Failed to get pixel clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get pixel clock: %d\n", ret);
+
 		return ret;
 	}
 
 	dpi->tvd_clk = devm_clk_get(dev, "pll");
 	if (IS_ERR(dpi->tvd_clk)) {
 		ret = PTR_ERR(dpi->tvd_clk);
-		dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
+
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index 13035c906035..b885f60f474c 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -628,7 +628,8 @@ static int mtk_ddp_probe(struct platform_device *pdev)
 	if (!ddp->data->no_clk) {
 		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);
 		}
 	}
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 5fa1073cf26b..a45ed0270531 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1194,14 +1194,18 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 	dsi->engine_clk = devm_clk_get(dev, "engine");
 	if (IS_ERR(dsi->engine_clk)) {
 		ret = PTR_ERR(dsi->engine_clk);
-		dev_err(dev, "Failed to get engine clock: %d\n", ret);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get engine clock: %d\n", ret);
 		goto err_unregister_host;
 	}
 
 	dsi->digital_clk = devm_clk_get(dev, "digital");
 	if (IS_ERR(dsi->digital_clk)) {
 		ret = PTR_ERR(dsi->digital_clk);
-		dev_err(dev, "Failed to get digital clock: %d\n", ret);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get digital clock: %d\n", ret);
 		goto err_unregister_host;
 	}
 
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 5e4a4dbda443..69c6a146c561 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1451,7 +1451,9 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 
 	ret = mtk_hdmi_get_all_clk(hdmi, np);
 	if (ret) {
-		dev_err(dev, "Failed to get clocks: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get clocks: %d\n", ret);
+
 		return ret;
 	}
 
-- 
2.25.1


  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 16:53 [PATCH v12 0/5] arm/arm64: mediatek: Fix mt8173 mmsys device probing Enric Balletbo i Serra
2020-03-11 16:53 ` Enric Balletbo i Serra [this message]
2020-03-11 16:53 ` [PATCH v12 2/5] dt-bindings: mediatek: Update mmsys binding to reflect it is a system controller Enric Balletbo i Serra
2020-03-12 15:22   ` Rob Herring
2020-03-11 16:53 ` [PATCH v12 3/5] clk / soc: mediatek: Move mt8173 MMSYS to platform driver Enric Balletbo i Serra
2020-03-11 16:58   ` Enric Balletbo i Serra
     [not found]   ` <158474603935.125146.14986079780178656133@swboyd.mtv.corp.google.com>
2020-03-25 15:36     ` Chun-Kuang Hu
2020-03-11 16:53 ` [PATCH v12 4/5] soc / drm: mediatek: Move routing control to mmsys device Enric Balletbo i Serra
2020-03-25 16:16   ` Matthias Brugger
2020-03-25 23:05     ` CK Hu
2020-03-26 11:54       ` Matthias Brugger
2020-03-26 14:51         ` CK Hu
2020-03-26 15:45           ` Matthias Brugger
2020-03-27  1:55             ` CK Hu
2020-04-16 16:22             ` Chun-Kuang Hu
2020-04-21  9:31               ` Matthias Brugger
2020-04-22  0:40                 ` Chun-Kuang Hu
2020-03-27 17:04       ` Matthias Brugger
2020-03-11 16:53 ` [PATCH v12 5/5] soc / drm: mediatek: Fix mediatek-drm device probing Enric Balletbo i Serra

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