diff options
| author | Bob Liu <lliubbo@gmail.com> | 2011-05-06 05:20:09 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-05-20 12:14:40 -0300 |
| commit | ecc6517d947e91f02eb5a3a055f524122846f84e (patch) | |
| tree | fdeccb017f68c070bdf4c699cf6ff48d742512c1 /drivers/media | |
| parent | 4bc90dea7be181cd876500b1d766faaa77c3d493 (diff) | |
[media] Revert "V4L/DVB: v4l2-dev: remove get_unmapped_area"
This reverts commit c29fcff3daafbf46d64a543c1950bbd206ad8c1c.
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 6dc7196296b3..19d5ae293780 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -352,6 +352,23 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return ret; } +#ifdef CONFIG_MMU +#define v4l2_get_unmapped_area NULL +#else +static unsigned long v4l2_get_unmapped_area(struct file *filp, + unsigned long addr, unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct video_device *vdev = video_devdata(filp); + + if (!vdev->fops->get_unmapped_area) + return -ENOSYS; + if (!video_is_registered(vdev)) + return -ENODEV; + return vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags); +} +#endif + static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm) { struct video_device *vdev = video_devdata(filp); @@ -454,6 +471,7 @@ static const struct file_operations v4l2_fops = { .read = v4l2_read, .write = v4l2_write, .open = v4l2_open, + .get_unmapped_area = v4l2_get_unmapped_area, .mmap = v4l2_mmap, .unlocked_ioctl = v4l2_ioctl, #ifdef CONFIG_COMPAT |