3 files changed, 19 insertions, 31 deletions

diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c
index 9e867b5229d..908e640c274 100644
--- a/drivers/media/video/ivtv/ivtv-fileops.c
+++ b/drivers/media/video/ivtv/ivtv-fileops.c
@@ -892,12 +892,20 @@ int ivtv_v4l2_open(struct inode *inode, struct file *filp)
 			return -EBUSY;
 		}
 
+		if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) {
+			if (atomic_read(&itv->capturing) > 0) {
+				/* switching to radio while capture is
+				   in progress is not polite */
+				kfree(item);
+				return -EBUSY;
+			}
+		}
+		/* Mark that the radio is being used. */
+		set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags);
 		/* We have the radio */
 		ivtv_mute(itv);
 		/* Switch tuner to radio */
 		ivtv_call_i2c_clients(itv, AUDC_SET_RADIO, NULL);
-		/* Mark that the radio is being used. */
-		set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags);
 		/* Select the correct audio input (i.e. radio tuner) */
 		ivtv_audio_set_io(itv);
 		if (itv->hw_flags & IVTV_HW_SAA711X)
@@ -931,13 +939,8 @@ void ivtv_mute(struct ivtv *itv)
 
 void ivtv_unmute(struct ivtv *itv)
 {
-	/* initialize or refresh input */
-	if (atomic_read(&itv->capturing) == 0)
-		ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
-
-	ivtv_msleep_timeout(100, 0);
-
 	if (atomic_read(&itv->capturing)) {
+		ivtv_msleep_timeout(100, 0);
 		ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
 		ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 0);
 	}
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index cee6c558c69..734f2d2ffa6 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -906,6 +906,9 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
 			IVTV_DEBUG_INFO("Input unchanged\n");
 			break;
 		}
+		if (atomic_read(&itv->capturing) > 0) {
+			return -EBUSY;
+		}
 		IVTV_DEBUG_INFO("Changing input from %d to %d\n",
 				itv->active_input, inp);
 
diff --git a/drivers/media/video/ivtv/ivtv-streams.c b/drivers/media/video/ivtv/ivtv-streams.c
index 405e2e3fcb4..0582b9d57c5 100644
--- a/drivers/media/video/ivtv/ivtv-streams.c
+++ b/drivers/media/video/ivtv/ivtv-streams.c
@@ -554,9 +554,10 @@ int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
 		clear_bit(IVTV_F_I_EOS, &itv->i_flags);
 
 		/* Initialize Digitizer for Capture */
+		itv->video_dec_func(itv, VIDIOC_STREAMOFF, 0);
+		ivtv_msleep_timeout(300, 1);
 		ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
-
-		ivtv_msleep_timeout(100, 0);
+		itv->video_dec_func(itv, VIDIOC_STREAMON, 0);
 	}
 
 	/* begin_capture */
@@ -713,7 +714,6 @@ int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
 	int cap_type;
 	unsigned long then;
 	int stopmode;
-	u32 data[CX2341X_MBOX_MAX_DATA];
 
 	if (s->v4l2dev == NULL)
 		return -EINVAL;
@@ -793,27 +793,9 @@ int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
 		}
 
 		then = jiffies;
-		/* Make sure DMA is complete */
-		add_wait_queue(&s->waitq, &wait);
-		do {
-			/* check if DMA is pending */
-			if ((s->type == IVTV_ENC_STREAM_TYPE_MPG) &&	/* MPG Only */
-			    (read_reg(IVTV_REG_DMASTATUS) & 0x02)) {
-				/* Check for last DMA */
-				ivtv_vapi_result(itv, data, CX2341X_ENC_GET_SEQ_END, 2, 0, 0);
-
-				if (data[0] == 1) {
-					IVTV_DEBUG_DMA("%s: Last DMA of size 0x%08x\n", s->name, data[1]);
-					break;
-				}
-			} else if (read_reg(IVTV_REG_DMASTATUS) & 0x02) {
-				break;
-			}
-		} while (!ivtv_msleep_timeout(10, 1) &&
-			 then + msecs_to_jiffies(2000) > jiffies);
 
-		set_current_state(TASK_RUNNING);
-		remove_wait_queue(&s->waitq, &wait);
+		/* Handle any pending interrupts */
+		ivtv_msleep_timeout(100, 1);
 	}
 
 	atomic_dec(&itv->capturing);