From 480f12f39ec8c3e57af00eb81d04c1efa951250e Mon Sep 17 00:00:00 2001
From: Douglas Anderson <dianders@chromium.org>
Date: Fri, 11 Jun 2021 10:17:46 -0700
Subject: drm/bridge: ti-sn65dsi86: Improve probe errors with dev_err_probe()
Git-commit: 4c1b3d94bf632c1420a5d4108199f55a5655831d
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

As I was testing to make sure that the DEFER path worked well with my
patch series, I got tired of seeing this scary message in my logs just
because the panel needed to defer:
  [drm:ti_sn_bridge_probe] *ERROR* could not find any panel node

Let's use dev_err_probe() which nicely quiets this error and also
simplifies the code a tiny bit. We'll also update other places in the
file which can use dev_err_probe().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210611101711.v10.10.I24bba069e63b1eea84443eef0c8535fd032a6311@changeid
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 31 +++++++++++----------------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index b544cbce7fdd..5d712c8c3c3b 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -1305,10 +1305,9 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
 	int ret;
 
 	ret = drm_of_find_panel_or_bridge(np, 1, 0, &pdata->panel, NULL);
-	if (ret) {
-		DRM_ERROR("could not find any panel node\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&adev->dev, ret,
+				     "could not find any panel node\n");
 
 	ti_sn_bridge_parse_lanes(pdata, np);
 
@@ -1456,27 +1455,23 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
 
 	pdata->regmap = devm_regmap_init_i2c(client,
 					     &ti_sn65dsi86_regmap_config);
-	if (IS_ERR(pdata->regmap)) {
-		DRM_ERROR("regmap i2c init failed\n");
-		return PTR_ERR(pdata->regmap);
-	}
+	if (IS_ERR(pdata->regmap))
+		return dev_err_probe(dev, PTR_ERR(pdata->regmap),
+				     "regmap i2c init failed\n");
 
 	pdata->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
-	if (IS_ERR(pdata->enable_gpio)) {
-		DRM_ERROR("failed to get enable gpio from DT\n");
-		ret = PTR_ERR(pdata->enable_gpio);
-		return ret;
-	}
+	if (IS_ERR(pdata->enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(pdata->enable_gpio),
+				     "failed to get enable gpio from DT\n");
 
 	ret = ti_sn65dsi86_parse_regulators(pdata);
-	if (ret) {
-		DRM_ERROR("failed to parse regulators\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to parse regulators\n");
 
 	pdata->refclk = devm_clk_get_optional(dev, "refclk");
 	if (IS_ERR(pdata->refclk))
-		return PTR_ERR(pdata->refclk);
+		return dev_err_probe(dev, PTR_ERR(pdata->refclk),
+				     "failed to get reference clock\n");
 
 	pm_runtime_enable(dev);
 	ret = devm_add_action_or_reset(dev, ti_sn65dsi86_runtime_disable, dev);
-- 
2.38.1