linux-kernel - [PATCH 2/2] drm/vmwgfx: Fix uninitialized return in vmw_kms_helper

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Date:	Sat, 19 Sep 2015 00:32:24 +0200
From:	Christian Engelmayer <cengelma@....at>
To:	airlied@...ux.ie
Cc:	thellstrom@...are.com, syeh@...are.com, daniel.vetter@...ll.ch,
	jakob@...are.com, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Christian Engelmayer <cengelma@....at>
Subject: [PATCH 2/2] drm/vmwgfx: Fix uninitialized return in vmw_kms_helper_dirty()

Function vmw_kms_helper_dirty() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as the
variable is unused anyway. Detected by Coverity CID 1324255.

Signed-off-by: Christian Engelmayer <cengelma@....at>
---
Compile tested only. Applies against linux-next.
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 61fb7f3de311..15a6c01cd016 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1685,7 +1685,6 @@ int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
 	struct drm_crtc *crtc;
 	u32 num_units = 0;
 	u32 i, k;
-	int ret;
 
 	dirty->dev_priv = dev_priv;
 
@@ -1711,7 +1710,7 @@ int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
 			if (!dirty->cmd) {
 				DRM_ERROR("Couldn't reserve fifo space "
 					  "for dirty blits.\n");
-				return ret;
+				return -ENOMEM;
 			}
 			memset(dirty->cmd, 0, dirty->fifo_reserve_size);
 		}
-- 
1.9.1

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