diff options
| author | Dan Carpenter | 2016-07-13 12:35:29 +0200 |
|---|---|---|
| committer | Rob Clark | 2016-07-16 16:29:32 +0200 |
| commit | 5745d21f9a92fa3b70149df69574a13becc3d53e (patch) | |
| tree | ff3a878abd84eafc7b77c146a73c1f8192a8df4f /drivers/gpu/drm/msm/msm_perf.c | |
| parent | drm/msm/hdmi: use PTR_ERR_OR_ZERO() to simplify the code (diff) | |
| download | kernel-qcow2-linux-5745d21f9a92fa3b70149df69574a13becc3d53e.tar.gz kernel-qcow2-linux-5745d21f9a92fa3b70149df69574a13becc3d53e.tar.xz kernel-qcow2-linux-5745d21f9a92fa3b70149df69574a13becc3d53e.zip | |
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_perf.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_perf.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/msm_perf.c b/drivers/gpu/drm/msm/msm_perf.c index 830857c47c86..17fe4e53e0d1 100644 --- a/drivers/gpu/drm/msm/msm_perf.c +++ b/drivers/gpu/drm/msm/msm_perf.c @@ -132,7 +132,7 @@ static ssize_t perf_read(struct file *file, char __user *buf, size_t sz, loff_t *ppos) { struct msm_perf_state *perf = file->private_data; - int n = 0, ret; + int n = 0, ret = 0; mutex_lock(&perf->read_lock); @@ -143,9 +143,10 @@ static ssize_t perf_read(struct file *file, char __user *buf, } n = min((int)sz, perf->buftot - perf->bufpos); - ret = copy_to_user(buf, &perf->buf[perf->bufpos], n); - if (ret) + if (copy_to_user(buf, &perf->buf[perf->bufpos], n)) { + ret = -EFAULT; goto out; + } perf->bufpos += n; *ppos += n; |