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V4L/DVB (3484): Make dvb_ringbuffer compatible to dmxdev_buffer 

Added variable 'error' to struct dvb_ringbuffer, which is set to zero on
init() and flush(). Also reset read an write pointers to zero on flush()
to get less fragmented data.

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Andreas Oberritter 2006-03-13 13:14:34 -03:00 committed by Linus Torvalds
parent fc34f16531
commit 9d9d6baeca
2 changed files with 4 additions and 1 deletions
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4
drivers/media/dvb/dvb-core/dvb_ringbuffer.c
View File

@ -45,6 +45,7 @@ void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data, size_t len)
rbuf->pread=rbuf->pwrite=0;
rbuf->data=data;
rbuf->size=len;
rbuf->error=0;
init_waitqueue_head(&rbuf->queue);
@ -86,7 +87,8 @@ ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf)
void dvb_ringbuffer_flush(struct dvb_ringbuffer *rbuf)
{
rbuf->pread = rbuf->pwrite;
rbuf->pread = rbuf->pwrite = 0;
rbuf->error = 0;
}

1
drivers/media/dvb/dvb-core/dvb_ringbuffer.h
View File

@ -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;