This patch fixes the bug in DMX_SET_BUFFER_SIZE for the demux.
Basically it resets read and write pointers to 0 in case they are
beyond the new size of the buffer.
Signed-off-by: Andrea Odetti <mariofutire@gmail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
mem = buf->data;
buf->data = NULL;
buf->size = size;
mem = buf->data;
buf->data = NULL;
buf->size = size;
- dvb_ringbuffer_flush(buf);
+
+ /* reset and not flush in case the buffer shrinks */
+ dvb_ringbuffer_reset(buf);
spin_unlock_irq(&dmxdevfilter->dev->lock);
vfree(mem);
spin_unlock_irq(&dmxdevfilter->dev->lock);
vfree(mem);
+void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf)
+{
+ rbuf->pread = rbuf->pwrite = 0;
+ rbuf->error = 0;
+}
void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf)
{
void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf)
{
** to lock read or write operations.
** Two or more readers must be locked against each other.
** Flushing the buffer counts as a read operation.
** 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.
*/
** Two or more writers must be locked against each other.
*/
extern ssize_t dvb_ringbuffer_avail(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 */
/* read routines & macros */
/* ---------------------- */
/* flush buffer */