diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-07-13 13:35:29 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2016-07-16 17:29:32 +0300 |
| commit | 5745d21f9a92fa3b70149df69574a13becc3d53e (patch) | |
| tree | ff3a878abd84eafc7b77c146a73c1f8192a8df4f /drivers/gpu/drm/msm/msm_rd.c | |
| parent | 06f3217207766b4bc2e56b88e0736037ae92fd30 (diff) | |
| download | linux-5745d21f9a92fa3b70149df69574a13becc3d53e.tar.xz | |
drm/msm: return -EFAULT instead of bytes remaining
copy_to/from_user returns the number of bytes remaining to be copied but
we want to return -EFAULT.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_rd.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_rd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c index 24254e07bcd5..3a5fdfcd67ae 100644 --- a/drivers/gpu/drm/msm/msm_rd.c +++ b/drivers/gpu/drm/msm/msm_rd.c @@ -149,9 +149,10 @@ static ssize_t rd_read(struct file *file, char __user *buf, goto out; n = min_t(int, sz, circ_count_to_end(&rd->fifo)); - ret = copy_to_user(buf, fptr, n); - if (ret) + if (copy_to_user(buf, fptr, n)) { + ret = -EFAULT; goto out; + } fifo->tail = (fifo->tail + n) & (BUF_SZ - 1); *ppos += n; |