diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-04-30 08:19:10 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-08 13:46:19 -0300 |
| commit | 4742c82ed90d0f8c82639750dcfe481e61d883a4 (patch) | |
| tree | 7b9e5848405655c4e77c0ca1aba5dfcbca841ef6 | |
| parent | 616bd4e2573cb114aadd90182ebe7f34066b15da (diff) | |
[media] uvcvideo: Use videobuf2 .get_unmapped_area() implementation
The get_unmapped_area() operation was forgotten during conversion to
videobuf2. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/uvc/uvc_queue.c | 43 |
1 files changed, 13 insertions, 30 deletions
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index 8f54e24e3f3..9288fbd5001 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -207,6 +207,19 @@ int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma) return ret; } +#ifndef CONFIG_MMU +unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, + unsigned long pgoff) +{ + unsigned long ret; + + mutex_lock(&queue->mutex); + ret = vb2_get_unmapped_area(&queue->queue, 0, 0, pgoff, 0); + mutex_unlock(&queue->mutex); + return ret; +} +#endif + unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, poll_table *wait) { @@ -237,36 +250,6 @@ int uvc_queue_allocated(struct uvc_video_queue *queue) return allocated; } -#ifndef CONFIG_MMU -/* - * Get unmapped area. - * - * NO-MMU arch need this function to make mmap() work correctly. - */ -unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, - unsigned long pgoff) -{ - struct uvc_buffer *buffer; - unsigned int i; - unsigned long ret; - - mutex_lock(&queue->mutex); - for (i = 0; i < queue->count; ++i) { - buffer = &queue->buffer[i]; - if ((buffer->buf.m.offset >> PAGE_SHIFT) == pgoff) - break; - } - if (i == queue->count) { - ret = -EINVAL; - goto done; - } - ret = (unsigned long)buf->mem; -done: - mutex_unlock(&queue->mutex); - return ret; -} -#endif - /* * Enable or disable the video buffers queue. * |