Merge branch 'linus' into x86/pat

[linux-2.6-omap-h63xx.git] / drivers / media / dvb / dvb-core / dvb_ringbuffer.h

diff --git a/drivers/media/dvb/dvb-core/dvb_ringbuffer.h b/drivers/media/dvb/dvb-core/dvb_ringbuffer.h
index 6d25609727719df623adfd83fde491fb1d071cf2..890826262966c16c709815d83e1e08ac68c08058 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_ringbuffer.h
+++ b/drivers/media/dvb/dvb-core/dvb_ringbuffer.h
@@ -35,6 +35,7 @@ struct dvb_ringbuffer {
        ssize_t           size;
        ssize_t           pread;
        ssize_t           pwrite;
+       int               error;
 
        wait_queue_head_t queue;
        spinlock_t        lock;
@@ -68,6 +69,7 @@ struct dvb_ringbuffer {
 **     to lock read or write operations.
 **     Two or more readers must be locked against each other.
 **     Flushing the buffer counts as a read operation.
+**     Resetting the buffer counts as a read and write operation.
 **     Two or more writers must be locked against each other.
 */
 
@@ -84,6 +86,13 @@ extern ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf);
 extern ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf);
 
 
+/*
+** Reset the read and write pointers to zero and flush the buffer
+** This counts as a read and write operation
+*/
+extern void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf);
+
+
 /* read routines & macros */
 /* ---------------------- */
 /* flush buffer */