[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>
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index 8f54e24..9288fbd 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -207,6 +207,19 @@
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 @@
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.
*