diff options
| author | Lajos Molnar <molnar@ti.com> | 2011-04-07 08:41:35 +0100 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-04-07 08:41:35 +0100 |
| commit | e994cdba14621ec608a7132723847fb73c8c4894 (patch) | |
| tree | 51eca60cb928d0f6d4c209c4fc467c3d213c308c /drivers/media | |
| parent | 0c2f31d6475056ae8ebc857c99eb20eb06c40902 (diff) | |
TILER: Make URBUF return the length of the buffer unregistered.
This is desired so that user-space components need not keep track
of the size of the buffer for unmapping.
Signed-off-by: Lajos Molnar <molnar@ti.com>
Signed-off-by: David Sin <davidsin@ti.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/tiler/tiler-iface.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/video/tiler/tiler-iface.c b/drivers/media/video/tiler/tiler-iface.c index 33c3c61a036..c2b6e025030 100644 --- a/drivers/media/video/tiler/tiler-iface.c +++ b/drivers/media/video/tiler/tiler-iface.c @@ -459,11 +459,17 @@ static s32 tiler_ioctl(struct inode *ip, struct file *filp, u32 cmd, list_for_each_entry(_b, &pi->bufs, by_pid) { if (buf_info.offset == _b->buf_info.offset) { _m_unregister_buf(_b); + buf_info.length = _b->buf_info.length; r = 0; break; } } mutex_unlock(&mtx); + + if (copy_to_user((void __user *)arg, &buf_info, + sizeof(_b->buf_info))) + return -EFAULT; + return r; break; case TILIOC_PRBLK: |