linux-kernel - [PATCH 1/2] drm/vmwgfx: make vmw_kms_helper

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Message-Id: <1442757057-645-1-git-send-email-nicolas.iooss_linux@m4x.org>
Date:	Sun, 20 Sep 2015 15:50:56 +0200
From:	Nicolas Iooss <nicolas.iooss_linux@....org>
To:	David Airlie <airlied@...ux.ie>,
	Thomas Hellstrom <thellstrom@...are.com>,
	dri-devel@...ts.freedesktop.org
Cc:	linux-kernel@...r.kernel.org,
	Nicolas Iooss <nicolas.iooss_linux@....org>
Subject: [PATCH 1/2] drm/vmwgfx: make vmw_kms_helper_dirty return an initialized value

In vmw_kms_helper_dirty(), local variable ret is never initialized
before begin used in a return statement when vmw_fifo_reserve() fails.
Instead of returning an uninitialized value, return -ENOMEM here and
remove the useless variable.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@....org>
---
 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);
 		}
-- 
2.5.2

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