V4L/DVB: cx18: export a couple of symbols so they can be shared with cx18-alsa

Expose a couple of symbols in the cx18 module so that locking of the PCM
stream can be shared with the cx18-alsa module.

This work was sponsored by ONELAN Limited.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 7 insertions, 2 deletions

diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c
index eef842b8765..863ce775823 100644
--- a/drivers/media/video/cx18/cx18-fileops.c
+++ b/drivers/media/video/cx18/cx18-fileops.c
@@ -40,7 +40,7 @@
    associated VBI and IDX streams are also automatically claimed.
    Possible error returns: -EBUSY if someone else has claimed
    the stream or 0 on success. */
-static int cx18_claim_stream(struct cx18_open_id *id, int type)
+int cx18_claim_stream(struct cx18_open_id *id, int type)
 {
         struct cx18 *cx = id->cx;
         struct cx18_stream *s = &cx->streams[type];
@@ -96,10 +96,11 @@ static int cx18_claim_stream(struct cx18_open_id *id, int type)
         set_bit(CX18_F_S_INTERNAL_USE, &s_assoc->s_flags);
         return 0;
 }
+EXPORT_SYMBOL(cx18_claim_stream);
 
 /* This function releases a previously claimed stream. It will take into
    account associated VBI streams. */
-static void cx18_release_stream(struct cx18_stream *s)
+void cx18_release_stream(struct cx18_stream *s)
 {
         struct cx18 *cx = s->cx;
         struct cx18_stream *s_assoc;
@@ -154,6 +155,7 @@ static void cx18_release_stream(struct cx18_stream *s)
                 }
         }
 }
+EXPORT_SYMBOL(cx18_release_stream);
 
 static void cx18_dualwatch(struct cx18 *cx)
 {
diff --git a/drivers/media/video/cx18/cx18-fileops.h b/drivers/media/video/cx18/cx18-fileops.h
index 92e2d5dab93..5c8fcb884f0 100644
--- a/drivers/media/video/cx18/cx18-fileops.h
+++ b/drivers/media/video/cx18/cx18-fileops.h
@@ -34,3 +34,6 @@ void cx18_stop_capture(struct cx18_open_id *id, int gop_end);
 void cx18_mute(struct cx18 *cx);
 void cx18_unmute(struct cx18 *cx);
 
+/* Shared with cx18-alsa module */
+int cx18_claim_stream(struct cx18_open_id *id, int type);
+void cx18_release_stream(struct cx18_stream *s);