From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 18 Oct 2011 06:09:19 +0000
Subject: [patch] vmwgfx: return -EFAULT instead of number of bytes remaining
Message-Id: <20111018060919.GC27732@elgon.mountain>
List-Id: <kernel-janitors.vger.kernel.org>
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To: David Airlie <airlied@linux.ie>
Cc: Dave Airlie <airlied@redhat.com>, Thomas Hellstrom <thellstrom@vmware.com>, kernel-janitors@vger.kernel.org, dri-devel@lists.freedesktop.org

The intent here was to return an error code, but instead the code
returns the number of bytes remaining (that weren't copied).

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 97f23ab..3f63435 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -150,6 +150,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
 	ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 	if (ret) {
 		DRM_ERROR("Failed to copy clip rects from userspace.\n");
+		ret = -EFAULT;
 		goto out_no_copy;
 	}
 
@@ -241,6 +242,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 	ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 	if (ret) {
 		DRM_ERROR("Failed to copy clip rects from userspace.\n");
+		ret = -EFAULT;
 		goto out_no_copy;
 	}