2 files changed, 13 insertions, 0 deletions
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-context.c b/linux/drivers/media/video/pvrusb2/pvrusb2-context.c
index 19787dc81..6ad1ce7dc 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-context.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-context.c
@@ -205,6 +205,17 @@ void pvr2_channel_done(struct pvr2_channel *cp)
 }
 
 
+int pvr2_channel_check_stream_no_lock(struct pvr2_channel *cp,
+			      struct pvr2_context_stream *sp)
+{
+	if (sp == cp->stream) return 0;
+	if (sp->user) {
+		return -EBUSY;
+	}
+	return 0;
+}
+
+
 int pvr2_channel_claim_stream(struct pvr2_channel *cp,
 			      struct pvr2_context_stream *sp)
 {
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-context.h b/linux/drivers/media/video/pvrusb2/pvrusb2-context.h
index 69c1f3a92..5e960ae51 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-context.h
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-context.h
@@ -85,6 +85,8 @@ void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
 void pvr2_channel_done(struct pvr2_channel *);
 int pvr2_channel_claim_stream(struct pvr2_channel *,
 			      struct pvr2_context_stream *);
+int pvr2_channel_check_stream_no_lock(struct pvr2_channel *,
+			      struct pvr2_context_stream *);
 struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
 	struct pvr2_context_stream *);