upstream: [media] em28xx: move videobuf2 related data from struct em28xx to struct...

The video and VBI-specific VB2 queue and mutexes are used only by
the v4l2 sub-driver. Move them to the V4L2 struct, preventing
wasting memory if this sub-driver is not used.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index 406fa34..7e402f4 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -3016,8 +3016,6 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
        const char *chip_name = default_chip_name;
 
        dev->udev = udev;
-       mutex_init(&dev->vb_queue_lock);
-       mutex_init(&dev->vb_vbi_queue_lock);
        mutex_init(&dev->ctrl_urb_lock);
        spin_lock_init(&dev->slock);
 

diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 0e8f73d..1e2ea60 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -1045,9 +1045,10 @@ static int em28xx_vb2_setup(struct em28xx *dev)
 {
        int rc;
        struct vb2_queue *q;
+       struct em28xx_v4l2 *v4l2 = dev->v4l2;
 
        /* Setup Videobuf2 for Video capture */
-       q = &dev->vb_vidq;
+       q = &v4l2->vb_vidq;
        q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
        q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
        q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
@@ -1061,7 +1062,7 @@ static int em28xx_vb2_setup(struct em28xx *dev)
                return rc;
 
        /* Setup Videobuf2 for VBI capture */
-       q = &dev->vb_vbiq;
+       q = &v4l2->vb_vbiq;
        q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
        q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
        q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
@@ -2479,8 +2480,10 @@ static int em28xx_v4l2_init(struct em28xx *dev)
                ret = -ENODEV;
                goto unregister_dev;
        }
-       v4l2->vdev->queue = &dev->vb_vidq;
-       v4l2->vdev->queue->lock = &dev->vb_queue_lock;
+       mutex_init(&v4l2->vb_queue_lock);
+       mutex_init(&v4l2->vb_vbi_queue_lock);
+       v4l2->vdev->queue = &v4l2->vb_vidq;
+       v4l2->vdev->queue->lock = &v4l2->vb_queue_lock;
 
        /* disable inapplicable ioctls */
        if (dev->board.is_webcam) {
@@ -2515,8 +2518,8 @@ static int em28xx_v4l2_init(struct em28xx *dev)
                v4l2->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
                                                "vbi");
 
-               v4l2->vbi_dev->queue = &dev->vb_vbiq;
-               v4l2->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
+               v4l2->vbi_dev->queue = &v4l2->vb_vbiq;
+               v4l2->vbi_dev->queue->lock = &v4l2->vb_vbi_queue_lock;
 
                /* disable inapplicable ioctls */
                v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_PARM);

diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
index fc3f8b8..71d8857 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx.h
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -509,6 +509,12 @@ struct em28xx_v4l2 {
        struct video_device *vdev;
        struct video_device *vbi_dev;
        struct video_device *radio_dev;
+
+       /* Videobuf2 */
+       struct vb2_queue vb_vidq;
+       struct vb2_queue vb_vbiq;
+       struct mutex vb_queue_lock;
+       struct mutex vb_vbi_queue_lock;
 };
 
 struct em28xx_audio {
@@ -650,12 +656,6 @@ struct em28xx {
        struct mutex lock;
        struct mutex ctrl_urb_lock;     /* protects urb_buf */
 
-       /* Videobuf2 */
-       struct vb2_queue vb_vidq;
-       struct vb2_queue vb_vbiq;
-       struct mutex vb_queue_lock;
-       struct mutex vb_vbi_queue_lock;
-
        /* resources in use */
        unsigned int resources;