From 4742c82ed90d0f8c82639750dcfe481e61d883a4 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 30 Apr 2012 08:19:10 -0300 Subject: [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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_queue.c | 43 +++++++++++-------------------------- 1 file 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. * -- cgit v1.2.1