linux-kernel - [PATCH v1 1/7] drm/st7735r: Avoid spamming logs if probe is deferred

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Message-Id: <20210421163157.50949-1-andriy.shevchenko@linux.intel.com>
Date:   Wed, 21 Apr 2021 19:31:51 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Sam Ravnborg <sam@...nborg.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Eric Anholt <eric@...olt.net>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        David Lechner <david@...hnology.com>,
        Kamlesh Gurudasani <kamlesh.gurudasani@...il.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/7] drm/st7735r: Avoid spamming logs if probe is deferred

The GPIO request can fail and probe may be deferred. Thus,
the error message may be printed again and again. Avoid
this by replacing DRM_DEV_ERROR() by dev_err_probe().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpu/drm/tiny/st7735r.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/tiny/st7735r.c b/drivers/gpu/drm/tiny/st7735r.c
index faaba0a033ea..e3cbaa846e2b 100644
--- a/drivers/gpu/drm/tiny/st7735r.c
+++ b/drivers/gpu/drm/tiny/st7735r.c
@@ -207,16 +207,12 @@ static int st7735r_probe(struct spi_device *spi)
 	drm = &dbidev->drm;
 
 	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
+	if (IS_ERR(dbi->reset))
+		return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n");
 
 	dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
-	if (IS_ERR(dc)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
-		return PTR_ERR(dc);
-	}
+	if (IS_ERR(dc))
+		return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
 
 	dbidev->backlight = devm_of_find_backlight(dev);
 	if (IS_ERR(dbidev->backlight))
-- 
2.30.2