[media] media: blackfin: bfin_capture: use vb2_fop_mmap/poll

No need to reinvent the wheel. Just use the already existing
functions provided by vb2.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/blackfin/bfin_capture.c b/drivers/media/platform/blackfin/bfin_capture.c
index bf7e999..84827d2 100644 (file)
--- a/drivers/media/platform/blackfin/bfin_capture.c
+++ b/drivers/media/platform/blackfin/bfin_capture.c
@@ -244,18 +244,6 @@ static int bcap_release(struct file *file)
        return 0;
 }
 
-static int bcap_mmap(struct file *file, struct vm_area_struct *vma)
-{
-       struct bcap_device *bcap_dev = video_drvdata(file);
-       int ret;
-
-       if (mutex_lock_interruptible(&bcap_dev->mutex))
-               return -ERESTARTSYS;
-       ret = vb2_mmap(&bcap_dev->buffer_queue, vma);
-       mutex_unlock(&bcap_dev->mutex);
-       return ret;
-}
-
 #ifndef CONFIG_MMU
 static unsigned long bcap_get_unmapped_area(struct file *file,
                                            unsigned long addr,
@@ -273,17 +261,6 @@ static unsigned long bcap_get_unmapped_area(struct file *file,
 }
 #endif
 
-static unsigned int bcap_poll(struct file *file, poll_table *wait)
-{
-       struct bcap_device *bcap_dev = video_drvdata(file);
-       unsigned int res;
-
-       mutex_lock(&bcap_dev->mutex);
-       res = vb2_poll(&bcap_dev->buffer_queue, file, wait);
-       mutex_unlock(&bcap_dev->mutex);
-       return res;
-}
-
 static int bcap_queue_setup(struct vb2_queue *vq,
                                const struct v4l2_format *fmt,
                                unsigned int *nbuffers, unsigned int *nplanes,
@@ -900,11 +877,11 @@ static struct v4l2_file_operations bcap_fops = {
        .open = bcap_open,
        .release = bcap_release,
        .unlocked_ioctl = video_ioctl2,
-       .mmap = bcap_mmap,
+       .mmap = vb2_fop_mmap,
 #ifndef CONFIG_MMU
        .get_unmapped_area = bcap_get_unmapped_area,
 #endif
-       .poll = bcap_poll
+       .poll = vb2_fop_poll
 };
 
 static int bcap_probe(struct platform_device *pdev)
@@ -1001,6 +978,7 @@ static int bcap_probe(struct platform_device *pdev)
        INIT_LIST_HEAD(&bcap_dev->dma_queue);
 
        vfd->lock = &bcap_dev->mutex;
+       vfd->queue = q;
 
        /* register video device */
        ret = video_register_device(bcap_dev->video_dev, VFL_TYPE_GRABBER, -1);