44 	rbuf->pread=rbuf->pwrite=0;  in dvb_ringbuffer_init()
58 	return (rbuf->pread==rbuf->pwrite);  in dvb_ringbuffer_empty()
67 	free = rbuf->pread - rbuf->pwrite;  in dvb_ringbuffer_free()
79 	avail = rbuf->pwrite - rbuf->pread;  in dvb_ringbuffer_avail()
89 	rbuf->pread = rbuf->pwrite;  in dvb_ringbuffer_flush()
96 	rbuf->pread = rbuf->pwrite = 0;  in dvb_ringbuffer_reset()
116 	split = (rbuf->pread + len > rbuf->size) ? rbuf->size - rbuf->pread : 0;  in dvb_ringbuffer_read_user()
118 		if (copy_to_user(buf, rbuf->data+rbuf->pread, split))  in dvb_ringbuffer_read_user()
122 		rbuf->pread = 0;  in dvb_ringbuffer_read_user()
124 	if (copy_to_user(buf, rbuf->data+rbuf->pread, todo))  in dvb_ringbuffer_read_user()
127 	rbuf->pread = (rbuf->pread + todo) % rbuf->size;  in dvb_ringbuffer_read_user()
137 	split = (rbuf->pread + len > rbuf->size) ? rbuf->size - rbuf->pread : 0;  in dvb_ringbuffer_read()
139 		memcpy(buf, rbuf->data+rbuf->pread, split);  in dvb_ringbuffer_read()
142 		rbuf->pread = 0;  in dvb_ringbuffer_read()
144 	memcpy(buf, rbuf->data+rbuf->pread, todo);  in dvb_ringbuffer_read()
146 	rbuf->pread = (rbuf->pread + todo) % rbuf->size;  in dvb_ringbuffer_read()
262 	       idx = rbuf->pread;  in dvb_ringbuffer_pkt_next()
269 	consumed = (idx - rbuf->pread) % rbuf->size;  in dvb_ringbuffer_pkt_next()