[34-longterm 105/260] i915: return -EFAULT if copy_to_user fails

From: Paul Gortmaker
Date: Sun Jan 02 2011 - 02:56:41 EST

From: Dan Carpenter <error27@xxxxxxxxx>

commit c877cdce93a44eea96f6cf7fc04be7d0372db2be upstream.

copy_to_user() returns the number of bytes remaining to be copied and
I'm pretty sure we want to return a negative error code here.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
drivers/gpu/drm/i915/i915_gem.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 37a9ea3..e07722a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3818,6 +3818,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
if (ret != 0) {
DRM_ERROR("copy %d cliprects failed: %d\n",
args->num_cliprects, ret);
+ ret = -EFAULT;
goto pre_mutex_err;

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