From: Insu Yun <wuninsu@gmail.com>
Date: Mon, 19 Oct 2015 16:33:30 +0000 (+0000)
Subject: drm: correctly check failed allocation
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=48aa1e748f29373fdcc2bc341eac08ef16bff269;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm: correctly check failed allocation

drm_property_create_range can be failed in memory pressure
Therefore, check return value and handle an error

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e54660a858e1..720a153d1a46 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1533,6 +1533,9 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 					  "select subconnector",
 					  drm_tv_select_enum_list,
 					  ARRAY_SIZE(drm_tv_select_enum_list));
+	if (!tv_selector)
+		goto nomem;
+
 	dev->mode_config.tv_select_subconnector_property = tv_selector;
 
 	tv_subconnector =
@@ -1540,6 +1543,8 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 				    "subconnector",
 				    drm_tv_subconnector_enum_list,
 				    ARRAY_SIZE(drm_tv_subconnector_enum_list));
+	if (!tv_subconnector)
+		goto nomem;
 	dev->mode_config.tv_subconnector_property = tv_subconnector;
 
 	/*
@@ -1547,42 +1552,67 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 	 */
 	dev->mode_config.tv_left_margin_property =
 		drm_property_create_range(dev, 0, "left margin", 0, 100);
+	if (!dev->mode_config.tv_left_margin_property)
+		goto nomem;
 
 	dev->mode_config.tv_right_margin_property =
 		drm_property_create_range(dev, 0, "right margin", 0, 100);
+	if (!dev->mode_config.tv_right_margin_property)
+		goto nomem;
 
 	dev->mode_config.tv_top_margin_property =
 		drm_property_create_range(dev, 0, "top margin", 0, 100);
+	if (!dev->mode_config.tv_top_margin_property)
+		goto nomem;
 
 	dev->mode_config.tv_bottom_margin_property =
 		drm_property_create_range(dev, 0, "bottom margin", 0, 100);
+	if (!dev->mode_config.tv_bottom_margin_property)
+		goto nomem;
 
 	dev->mode_config.tv_mode_property =
 		drm_property_create(dev, DRM_MODE_PROP_ENUM,
 				    "mode", num_modes);
+	if (!dev->mode_config.tv_mode_property)
+		goto nomem;
+
 	for (i = 0; i < num_modes; i++)
 		drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 				      i, modes[i]);
 
 	dev->mode_config.tv_brightness_property =
 		drm_property_create_range(dev, 0, "brightness", 0, 100);
+	if (!dev->mode_config.tv_brightness_property)
+		goto nomem;
 
 	dev->mode_config.tv_contrast_property =
 		drm_property_create_range(dev, 0, "contrast", 0, 100);
+	if (!dev->mode_config.tv_contrast_property)
+		goto nomem;
 
 	dev->mode_config.tv_flicker_reduction_property =
 		drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
+	if (!dev->mode_config.tv_flicker_reduction_property)
+		goto nomem;
 
 	dev->mode_config.tv_overscan_property =
 		drm_property_create_range(dev, 0, "overscan", 0, 100);
+	if (!dev->mode_config.tv_overscan_property)
+		goto nomem;
 
 	dev->mode_config.tv_saturation_property =
 		drm_property_create_range(dev, 0, "saturation", 0, 100);
+	if (!dev->mode_config.tv_saturation_property)
+		goto nomem;
 
 	dev->mode_config.tv_hue_property =
 		drm_property_create_range(dev, 0, "hue", 0, 100);
+	if (!dev->mode_config.tv_hue_property)
+		goto nomem;
 
 	return 0;
+nomem:
+	return -ENOMEM;
 }
 EXPORT_SYMBOL(drm_mode_create_tv_properties);