Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media update from Mauro Carvalho Chehab:

 - OF documentation and patches at core and drivers, to be used by for
   embedded media systems

 - some I2C drivers used on go7007 were rewritten/promoted from staging:
   sony-btf-mpx, tw2804, tw9903, tw9906, wis-ov7640, wis-uda1342

 - add fimc-is driver (Exynos)

 - add a new radio driver: radio-si476x

 - add a two new tuners: r820t and tuner_it913x

 - split camera code on em28xx driver and add more models

 - the cypress firmware load is used outside dvb usb drivers.  So, move
   it to a common directory to make easier to re-use it

 - siano media driver updated to work with sms2270 devices

 - several work done in order to promote go7007 and solo6x1x out of
   staging (still, there are some pending issues)

 - several API compliance fixes at v4l2 drivers that don't behave as
   expected

 - as usual, lots of driver fixes, improvements, cleanups and new device
   addition at the existing drivers.

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (831 commits)
  [media] cx88: make core less verbose
  [media] em28xx: fix oops at em28xx_dvb_bus_ctrl()
  [media] s5c73m3: fix indentation of the help section in Kconfig
  [media] cx25821-alsa: get rid of a __must_check warning
  [media] cx25821-video: declare cx25821_vidioc_s_std as static
  [media] cx25821-video: remove maxw from cx25821_vidioc_try_fmt_vid_cap
  [media] r820t: Remove a warning for an unused value
  [media] dib0090: Fix a warning at dib0090_set_EFUSE
  [media] dib8000: fix a warning
  [media] dib8000: Fix sub-channel range
  [media] dib8000: store dtv_property_cache in a temp var
  [media] dib8000: warning fix: declare internal functions as static
  [media] r820t: quiet gcc warning on n_ring
  [media] r820t: memory leak in release()
  [media] r820t: precendence bug in r820t_xtal_check()
  [media] videodev2.h: Remove the unused old V4L1 buffer types
  [media] anysee: Grammar s/report the/report to/
  [media] anysee: Initialize ret = 0 in anysee_frontend_attach()
  [media] media: videobuf2: fix the length check for mmap
  [media] em28xx: save isoc endpoint number for DVB only if endpoint has alt settings with xMaxPacketSize != 0
  ...

1 files changed, 31 insertions, 3 deletions

diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index da99cf727162..66f599fcb829 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -230,12 +230,15 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
 		dprintk("No input buffers available\n");
 		return;
 	}
+	spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
 	if (list_empty(&m2m_ctx->cap_q_ctx.rdy_queue)) {
+		spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
 		spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
 		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
 		dprintk("No output buffers available\n");
 		return;
 	}
+	spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
 	spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
 
 	if (m2m_dev->m2m_ops->job_ready
@@ -405,10 +408,35 @@ EXPORT_SYMBOL_GPL(v4l2_m2m_streamon);
 int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 		       enum v4l2_buf_type type)
 {
-	struct vb2_queue *vq;
+	struct v4l2_m2m_dev *m2m_dev;
+	struct v4l2_m2m_queue_ctx *q_ctx;
+	unsigned long flags_job, flags;
+	int ret;
 
-	vq = v4l2_m2m_get_vq(m2m_ctx, type);
-	return vb2_streamoff(vq, type);
+	q_ctx = get_queue_ctx(m2m_ctx, type);
+	ret = vb2_streamoff(&q_ctx->q, type);
+	if (ret)
+		return ret;
+
+	m2m_dev = m2m_ctx->m2m_dev;
+	spin_lock_irqsave(&m2m_dev->job_spinlock, flags_job);
+	/* We should not be scheduled anymore, since we're dropping a queue. */
+	INIT_LIST_HEAD(&m2m_ctx->queue);
+	m2m_ctx->job_flags = 0;
+
+	spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
+	/* Drop queue, since streamoff returns device to the same state as after
+	 * calling reqbufs. */
+	INIT_LIST_HEAD(&q_ctx->rdy_queue);
+	spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
+
+	if (m2m_dev->curr_ctx == m2m_ctx) {
+		m2m_dev->curr_ctx = NULL;
+		wake_up(&m2m_ctx->finished);
+	}
+	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_streamoff);