5 files changed, 25 insertions, 12 deletions

diff --git a/drivers/media/video/cx2341x.c b/drivers/media/video/cx2341x.c
index 904bba0dbc4d..62304255dcae 100644
--- a/drivers/media/video/cx2341x.c
+++ b/drivers/media/video/cx2341x.c
@@ -190,17 +190,21 @@ static int cx2341x_get_ctrl(struct cx2341x_mpeg_params *params,
 
 /* Map the control ID to the correct field in the cx2341x_mpeg_params
    struct. Return -EINVAL if the ID is unknown, else return 0. */
-static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params,
+static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params, int busy,
                 struct v4l2_ext_control *ctrl)
 {
         switch (ctrl->id) {
         case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+                if (busy)
+                        return -EBUSY;
                 params->audio_sampling_freq = ctrl->value;
                 break;
         case V4L2_CID_MPEG_AUDIO_ENCODING:
                 params->audio_encoding = ctrl->value;
                 break;
         case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+                if (busy)
+                        return -EBUSY;
                 params->audio_l2_bitrate = ctrl->value;
                 break;
         case V4L2_CID_MPEG_AUDIO_MODE:
@@ -245,6 +249,8 @@ static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params,
                 params->video_gop_closure = ctrl->value;
                 break;
         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+                if (busy)
+                        return -EBUSY;
                 /* MPEG-1 only allows CBR */
                 if (params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1 &&
                     ctrl->value != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
@@ -252,9 +258,13 @@ static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params,
                 params->video_bitrate_mode = ctrl->value;
                 break;
         case V4L2_CID_MPEG_VIDEO_BITRATE:
+                if (busy)
+                        return -EBUSY;
                 params->video_bitrate = ctrl->value;
                 break;
         case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+                if (busy)
+                        return -EBUSY;
                 params->video_bitrate_peak = ctrl->value;
                 break;
         case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
@@ -267,6 +277,8 @@ static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params,
                 params->video_mute_yuv = ctrl->value;
                 break;
         case V4L2_CID_MPEG_STREAM_TYPE:
+                if (busy)
+                        return -EBUSY;
                 params->stream_type = ctrl->value;
                 params->video_encoding =
                         (params->stream_type == V4L2_MPEG_STREAM_TYPE_MPEG1_SS ||
@@ -631,7 +643,7 @@ static void cx2341x_calc_audio_properties(struct cx2341x_mpeg_params *params)
                 (params->audio_crc << 14);
 }
 
-int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params,
+int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params, int busy,
                   struct v4l2_ext_controls *ctrls, unsigned int cmd)
 {
         int err = 0;
@@ -663,7 +675,7 @@ int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params,
                 err = v4l2_ctrl_check(ctrl, &qctrl, menu_items);
                 if (err)
                         break;
-                err = cx2341x_set_ctrl(params, ctrl);
+                err = cx2341x_set_ctrl(params, busy, ctrl);
                 if (err)
                         break;
         }
diff --git a/drivers/media/video/cx88/cx88-blackbird.c b/drivers/media/video/cx88/cx88-blackbird.c
index 206af419aea7..47007380a98a 100644
--- a/drivers/media/video/cx88/cx88-blackbird.c
+++ b/drivers/media/video/cx88/cx88-blackbird.c
@@ -876,7 +876,7 @@ static int vidioc_g_ext_ctrls (struct file *file, void *priv,
 
         if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
                 return -EINVAL;
-        return cx2341x_ext_ctrls(&dev->params, f, VIDIOC_G_EXT_CTRLS);
+        return cx2341x_ext_ctrls(&dev->params, 0, f, VIDIOC_G_EXT_CTRLS);
 }
 
 static int vidioc_s_ext_ctrls (struct file *file, void *priv,
@@ -889,7 +889,7 @@ static int vidioc_s_ext_ctrls (struct file *file, void *priv,
         if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
                 return -EINVAL;
         p = dev->params;
-        err = cx2341x_ext_ctrls(&p, f, VIDIOC_S_EXT_CTRLS);
+        err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_S_EXT_CTRLS);
         if (!err) {
                 err = cx2341x_update(dev, blackbird_mbox_func, &dev->params, &p);
                 dev->params = p;
@@ -907,7 +907,7 @@ static int vidioc_try_ext_ctrls (struct file *file, void *priv,
         if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
                 return -EINVAL;
         p = dev->params;
-        err = cx2341x_ext_ctrls(&p, f, VIDIOC_TRY_EXT_CTRLS);
+        err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
 
         return err;
 }
diff --git a/drivers/media/video/ivtv/ivtv-controls.c b/drivers/media/video/ivtv/ivtv-controls.c
index 7a876c3e5b19..0005ea46f208 100644
--- a/drivers/media/video/ivtv/ivtv-controls.c
+++ b/drivers/media/video/ivtv/ivtv-controls.c
@@ -232,7 +232,7 @@ int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
                 IVTV_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n");
                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
                         struct cx2341x_mpeg_params p = itv->params;
-                        int err = cx2341x_ext_ctrls(&p, arg, cmd);
+                        int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), arg, cmd);
 
                         if (err)
                                 return err;
@@ -282,7 +282,7 @@ int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
                 }
                 IVTV_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n");
                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
-                        return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+                        return cx2341x_ext_ctrls(&itv->params, 0, arg, cmd);
                 return -EINVAL;
         }
 
@@ -292,7 +292,7 @@ int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
 
                 IVTV_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n");
                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
-                        return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+                        return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), arg, cmd);
                 return -EINVAL;
         }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 1311891e7ee3..2d5be5cfbccf 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -492,7 +492,7 @@ static int ctrl_cx2341x_get(struct pvr2_ctrl *cptr,int *vp)
         cs.controls = &c1;
         cs.count = 1;
         c1.id = cptr->info->v4l_id;
-        ret = cx2341x_ext_ctrls(&cptr->hdw->enc_ctl_state,&cs,
+        ret = cx2341x_ext_ctrls(&cptr->hdw->enc_ctl_state, 0, &cs,
                                 VIDIOC_G_EXT_CTRLS);
         if (ret) return ret;
         *vp = c1.value;
@@ -510,7 +510,7 @@ static int ctrl_cx2341x_set(struct pvr2_ctrl *cptr,int m,int v)
         cs.count = 1;
         c1.id = cptr->info->v4l_id;
         c1.value = v;
-        ret = cx2341x_ext_ctrls(&cptr->hdw->enc_ctl_state,&cs,
+        ret = cx2341x_ext_ctrls(&cptr->hdw->enc_ctl_state, 0, &cs,
                                 VIDIOC_S_EXT_CTRLS);
         if (ret) return ret;
         cptr->hdw->enc_stale = !0;
@@ -2478,7 +2478,7 @@ static int pvr2_hdw_commit_ctl_internal(struct pvr2_hdw *hdw)
                 cs.count = 1;
                 c1.id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ;
                 c1.value = hdw->srate_val;
-                cx2341x_ext_ctrls(&hdw->enc_ctl_state,&cs,VIDIOC_S_EXT_CTRLS);
+                cx2341x_ext_ctrls(&hdw->enc_ctl_state, 0, &cs,VIDIOC_S_EXT_CTRLS);
         }
 
         /* Scan i2c core at this point - before we clear all the dirty
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index d2915d3530ea..0689a041d777 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -716,6 +716,7 @@ int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 ste
         case V4L2_CID_AUDIO_MUTE:
         case V4L2_CID_AUDIO_LOUDNESS:
         case V4L2_CID_MPEG_AUDIO_MUTE:
+        case V4L2_CID_MPEG_VIDEO_MUTE:
         case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
         case V4L2_CID_MPEG_VIDEO_PULLDOWN:
                 qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;