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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2012-04-30 08:19:10 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-05-08 13:46:19 -0300
commit4742c82ed90d0f8c82639750dcfe481e61d883a4 (patch)
tree7b9e5848405655c4e77c0ca1aba5dfcbca841ef6 /drivers
parent616bd4e2573cb114aadd90182ebe7f34066b15da (diff)
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[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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/uvc/uvc_queue.c43
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 8f54e24e3f35..9288fbd5001b 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.
*