Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (37 commits)
  V4L/DVB: v4l: radio: si470x: fix unneeded free_irq() call
  V4L/DVB: v4l: videobuf: prevent passing a NULL to dma_free_coherent()
  V4L/DVB: ir-core: Fix null dereferences in the protocols sysfs interface
  V4L/DVB: v4l: s5p-fimc: Fix 3-planar formats handling and pixel offset error on S5PV210 SoCs
  V4L/DVB: v4l: s5p-fimc: Fix return value on probe() failure
  V4L/DVB: uvcvideo: Restrict frame rates for Chicony CNF7129 webcam
  V4L/DVB: uvcvideo: Fix support for Medion Akoya All-in-one PC integrated webcam
  V4L/DVB: ivtvfb: prevent reading uninitialized stack memory
  V4L/DVB: cx25840: Fix typo in volume control initialization: 65335 vs. 65535
  V4L/DVB: v4l: mem2mem_testdev: add missing release for video_device
  V4L/DVB: v4l: mem2mem_testdev: fix errorenous comparison
  V4L/DVB: mt9v022.c: Fixed compilation warning
  V4L/DVB: mt9m111: added current colorspace at g_fmt
  V4L/DVB: mt9m111: cropcap and s_crop check if type is VIDEO_CAPTURE
  V4L/DVB: mx2_camera: fix a race causing NULL dereference
  V4L/DVB: tm6000: bugfix data handling
  V4L/DVB: gspca - sn9c20x: Bad transfer size of Bayer images
  V4L/DVB: videobuf-dma-sg: set correct size in last sg element
  V4L/DVB: cx231xx: Avoid an OOPS when card is unknown (card=0)
  V4L/DVB: dvb: fix smscore_getbuffer() logic
  ...

1 files changed, 12 insertions, 19 deletions

diff --git a/drivers/media/dvb/siano/smscoreapi.c b/drivers/media/dvb/siano/smscoreapi.c
index d93468cd3a8..ff3b0fa901b 100644
--- a/drivers/media/dvb/siano/smscoreapi.c
+++ b/drivers/media/dvb/siano/smscoreapi.c
@@ -1098,33 +1098,26 @@ EXPORT_SYMBOL_GPL(smscore_onresponse);
  *
  * @return pointer to descriptor on success, NULL on error.
  */
-struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev)
+
+struct smscore_buffer_t *get_entry(struct smscore_device_t *coredev)
 {
 	struct smscore_buffer_t *cb = NULL;
 	unsigned long flags;
 
-	DEFINE_WAIT(wait);
-
 	spin_lock_irqsave(&coredev->bufferslock, flags);
-
-	/* This function must return a valid buffer, since the buffer list is
-	 * finite, we check that there is an available buffer, if not, we wait
-	 * until such buffer become available.
-	 */
-
-	prepare_to_wait(&coredev->buffer_mng_waitq, &wait, TASK_INTERRUPTIBLE);
-	if (list_empty(&coredev->buffers)) {
-		spin_unlock_irqrestore(&coredev->bufferslock, flags);
-		schedule();
-		spin_lock_irqsave(&coredev->bufferslock, flags);
+	if (!list_empty(&coredev->buffers)) {
+		cb = (struct smscore_buffer_t *) coredev->buffers.next;
+		list_del(&cb->entry);
 	}
+	spin_unlock_irqrestore(&coredev->bufferslock, flags);
+	return cb;
+}
 
-	finish_wait(&coredev->buffer_mng_waitq, &wait);
-
-	cb = (struct smscore_buffer_t *) coredev->buffers.next;
-	list_del(&cb->entry);
+struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev)
+{
+	struct smscore_buffer_t *cb = NULL;
 
-	spin_unlock_irqrestore(&coredev->bufferslock, flags);
+	wait_event(coredev->buffer_mng_waitq, (cb = get_entry(coredev)));
 
 	return cb;
 }