V4L/DVB (7599): em28xx-dvb: videobuf callbacks are waiting for em28xx_fh

Thanks to Devin Heitmueller <devin.heitmueller@gmail.com> for pointing
this issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 20 insertions, 11 deletions

diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index cbc155d302c8..d3d52972cd84 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -45,6 +45,7 @@ buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
         struct em28xx_fh *fh = vq->priv_data;
         struct em28xx        *dev = fh->dev;
 
+        /* FIXME: The better would be to allocate a smaller buffer */
         *size = 16 * fh->dev->width * fh->dev->height >> 3;
         if (0 == *count)
                 *count = EM28XX_DEF_BUF;
@@ -109,11 +110,16 @@ static int dvb_init(struct em28xx *dev)
 
         dev->qops->buf_setup = buffer_setup;
 
+        /* FIXME: Do we need more initialization here? */
+        memset(&dev->dvb_fh, 0, sizeof (dev->dvb_fh));
+        dev->dvb_fh.dev = dev;
+        dev->dvb_fh.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
         videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops,
                         &dev->udev->dev, &dev->slock,
                         V4L2_BUF_TYPE_VIDEO_CAPTURE,
                         V4L2_FIELD_ALTERNATE,
-                        sizeof(struct em28xx_buffer), dev);
+                        sizeof(struct em28xx_buffer), &dev->dvb_fh);
 
         /* init frontend */
         switch (dev->model) {
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 10f64652c04f..3786dd819bbd 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -304,6 +304,18 @@ struct em28xx_audio {
         spinlock_t slock;
 };
 
+struct em28xx;
+
+struct em28xx_fh {
+        struct em28xx *dev;
+        unsigned int  stream_on:1;      /* Locks streams */
+        int           radio;
+
+        struct videobuf_queue        vb_vidq;
+
+        enum v4l2_buf_type           type;
+};
+
 /* main device struct */
 struct em28xx {
         /* generic device properties */
@@ -401,19 +413,10 @@ struct em28xx {
 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
         struct videobuf_dvb        dvb;
         struct videobuf_queue_ops  *qops;
+        struct em28xx_fh           dvb_fh;
 #endif
 };
 
-struct em28xx_fh {
-        struct em28xx *dev;
-        unsigned int  stream_on:1;      /* Locks streams */
-        int           radio;
-
-        struct videobuf_queue        vb_vidq;
-
-        enum v4l2_buf_type           type;
-};
-
 struct em28xx_ops {
         struct list_head next;
         char *name;