diff options
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-context.c | 11 | ||||
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-context.h | 2 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-context.c b/drivers/media/video/pvrusb2/pvrusb2-context.c index cf129746205d..69786cdaa859 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-context.c +++ b/drivers/media/video/pvrusb2/pvrusb2-context.c @@ -188,6 +188,17 @@ 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/drivers/media/video/pvrusb2/pvrusb2-context.h b/drivers/media/video/pvrusb2/pvrusb2-context.h index 6327fa1f7e4f..4d0f4ad64122 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-context.h +++ b/drivers/media/video/pvrusb2/pvrusb2-context.h @@ -76,6 +76,8 @@ 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 *); |