linux-kernel - [PATCH v1] drm/rockchip: analogix_dp: Use dev_err_probe() instead of DRM_DEV

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Message-Id: <20251110075817.1159857-1-damon.ding@rock-chips.com>
Date: Mon, 10 Nov 2025 15:58:17 +0800
From: Damon Ding <damon.ding@...k-chips.com>
To: heiko@...ech.de,
	andy.yan@...k-chips.com,
	hjc@...k-chips.com
Cc: maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	simona@...ll.ch,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Damon Ding <damon.ding@...k-chips.com>
Subject: [PATCH v1] drm/rockchip: analogix_dp: Use dev_err_probe() instead of DRM_DEV_ERROR() during probing

The DRM_DEV_ERROR() has been deprecated, and use dev_err_probe()
can be better. The other reason is that dev_err_probe() help avoid
unexpected repeated err logs during defered probing.

Signed-off-by: Damon Ding <damon.ding@...k-chips.com>

---

As Heiko suggested[0], the other similar codes in
rockchip_dp_of_probe() should be modified to dev_err_probe().

[0] https://lore.kernel.org/all/8513b4b6-0b59-4b42-864b-0fe0423cd7fd@rock-chips.com/
---
 .../gpu/drm/rockchip/analogix_dp-rockchip.c   | 31 +++++++++----------
 1 file changed, 14 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 937f83cf42fc..94da0f745525 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -330,32 +330,29 @@ static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
 	struct device_node *np = dev->of_node;
 
 	dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
-	if (IS_ERR(dp->grf)) {
-		DRM_DEV_ERROR(dev, "failed to get rockchip,grf property\n");
-		return PTR_ERR(dp->grf);
-	}
+	if (IS_ERR(dp->grf))
+		return dev_err_probe(dev, PTR_ERR(dp->grf),
+				     "failed to get rockchip,grf property\n");
 
 	dp->grfclk = devm_clk_get_optional(dev, "grf");
 	if (IS_ERR(dp->grfclk))
-		return dev_err_probe(dev, PTR_ERR(dp->grfclk), "failed to get grf clock\n");
+		return dev_err_probe(dev, PTR_ERR(dp->grfclk),
+				     "failed to get grf clock\n");
 
 	dp->pclk = devm_clk_get(dev, "pclk");
-	if (IS_ERR(dp->pclk)) {
-		DRM_DEV_ERROR(dev, "failed to get pclk property\n");
-		return PTR_ERR(dp->pclk);
-	}
+	if (IS_ERR(dp->pclk))
+		return dev_err_probe(dev, PTR_ERR(dp->pclk),
+				     "failed to get pclk property\n");
 
 	dp->rst = devm_reset_control_get(dev, "dp");
-	if (IS_ERR(dp->rst)) {
-		DRM_DEV_ERROR(dev, "failed to get dp reset control\n");
-		return PTR_ERR(dp->rst);
-	}
+	if (IS_ERR(dp->rst))
+		return dev_err_probe(dev, PTR_ERR(dp->rst),
+				     "failed to get dp reset control\n");
 
 	dp->apbrst = devm_reset_control_get_optional(dev, "apb");
-	if (IS_ERR(dp->apbrst)) {
-		DRM_DEV_ERROR(dev, "failed to get apb reset control\n");
-		return PTR_ERR(dp->apbrst);
-	}
+	if (IS_ERR(dp->apbrst))
+		return dev_err_probe(dev, PTR_ERR(dp->apbrst),
+				     "failed to get apb reset control\n");
 
 	return 0;
 }
-- 
2.34.1