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Subject: [PATCH 1/2] drm/tilcdc: Delete an error message for a failed memory
 allocation in seven functions
From:   SF Markus Elfring <elfring@users.sourceforge.net>
To:     dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
        Jyri Sarha <jsarha@ti.com>,
        Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        kernel-janitors@vger.kernel.org
References: <a7c7cebb-f4c9-04b7-5507-e41f8ebfb5f9@users.sourceforge.net>
Message-ID: <8391221b-45f4-7ad2-ad21-3681a945f034@users.sourceforge.net>
Date:   Tue, 6 Feb 2018 22:23:25 +0100
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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 6 Feb 2018 21:51:15 +0100

Omit an extra message for a memory allocation failure in these functions.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/gpu/drm/tilcdc/tilcdc_crtc.c   | 4 +---
 drivers/gpu/drm/tilcdc/tilcdc_drv.c    | 4 +---
 drivers/gpu/drm/tilcdc/tilcdc_panel.c  | 9 ++-------
 drivers/gpu/drm/tilcdc/tilcdc_tfp410.c | 8 ++------
 4 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 8bf6bb93dc79..1b278a22c8b7 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -994,10 +994,8 @@ int tilcdc_crtc_create(struct drm_device *dev)
 	int ret;
 
 	tilcdc_crtc = devm_kzalloc(dev->dev, sizeof(*tilcdc_crtc), GFP_KERNEL);
-	if (!tilcdc_crtc) {
-		dev_err(dev->dev, "allocation failed\n");
+	if (!tilcdc_crtc)
 		return -ENOMEM;
-	}
 
 	init_completion(&tilcdc_crtc->palette_loaded);
 	tilcdc_crtc->palette_base = dmam_alloc_coherent(dev->dev,
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 1afde61f1247..b8a5e4ed22e6 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -233,10 +233,8 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(dev, "failed to allocate private data\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	ddev = drm_dev_alloc(ddrv, dev);
 	if (IS_ERR(ddev))
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
index 8eebb5f826a6..0b6aa95aec89 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
@@ -101,10 +101,8 @@ static struct drm_encoder *panel_encoder_create(struct drm_device *dev,
 
 	panel_encoder = devm_kzalloc(dev->dev, sizeof(*panel_encoder),
 				     GFP_KERNEL);
-	if (!panel_encoder) {
-		dev_err(dev->dev, "allocation failed\n");
+	if (!panel_encoder)
 		return NULL;
-	}
 
 	panel_encoder->mod = mod;
 
@@ -210,10 +208,8 @@ static struct drm_connector *panel_connector_create(struct drm_device *dev,
 
 	panel_connector = devm_kzalloc(dev->dev, sizeof(*panel_connector),
 				       GFP_KERNEL);
-	if (!panel_connector) {
-		dev_err(dev->dev, "allocation failed\n");
+	if (!panel_connector)
 		return NULL;
-	}
 
 	panel_connector->encoder = encoder;
 	panel_connector->mod = mod;
@@ -294,7 +290,6 @@ static struct tilcdc_panel_info *of_get_panel_info(struct device_node *np)
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info) {
-		pr_err("%s: allocation failed\n", __func__);
 		of_node_put(info_np);
 		return NULL;
 	}
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
index 7e3643462a08..c45cabb38db0 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
@@ -111,10 +111,8 @@ static struct drm_encoder *tfp410_encoder_create(struct drm_device *dev,
 
 	tfp410_encoder = devm_kzalloc(dev->dev, sizeof(*tfp410_encoder),
 				      GFP_KERNEL);
-	if (!tfp410_encoder) {
-		dev_err(dev->dev, "allocation failed\n");
+	if (!tfp410_encoder)
 		return NULL;
-	}
 
 	tfp410_encoder->dpms = DRM_MODE_DPMS_OFF;
 	tfp410_encoder->mod = mod;
@@ -224,10 +222,8 @@ static struct drm_connector *tfp410_connector_create(struct drm_device *dev,
 
 	tfp410_connector = devm_kzalloc(dev->dev, sizeof(*tfp410_connector),
 					GFP_KERNEL);
-	if (!tfp410_connector) {
-		dev_err(dev->dev, "allocation failed\n");
+	if (!tfp410_connector)
 		return NULL;
-	}
 
 	tfp410_connector->encoder = encoder;
 	tfp410_connector->mod = mod;
-- 
2.16.1