40 	rbuf->pread=rbuf->pwrite=0;  in dvb_ringbuffer_init()
60 	return (rbuf->pread == smp_load_acquire(&rbuf->pwrite));  in dvb_ringbuffer_empty()
74 	free = READ_ONCE(rbuf->pread) - rbuf->pwrite;  in dvb_ringbuffer_free()
90 	avail = smp_load_acquire(&rbuf->pwrite) - rbuf->pread;  in dvb_ringbuffer_avail()
106 	smp_store_release(&rbuf->pread, smp_load_acquire(&rbuf->pwrite));  in dvb_ringbuffer_flush()
116 	smp_store_release(&rbuf->pread, 0);  in dvb_ringbuffer_reset()
138 	split = (rbuf->pread + len > rbuf->size) ? rbuf->size - rbuf->pread : 0;  in dvb_ringbuffer_read_user()
140 		if (copy_to_user(buf, rbuf->data+rbuf->pread, split))  in dvb_ringbuffer_read_user()
148 		smp_store_release(&rbuf->pread, 0);  in dvb_ringbuffer_read_user()
150 	if (copy_to_user(buf, rbuf->data+rbuf->pread, todo))  in dvb_ringbuffer_read_user()
154 	smp_store_release(&rbuf->pread, (rbuf->pread + todo) % rbuf->size);  in dvb_ringbuffer_read_user()
164 	split = (rbuf->pread + len > rbuf->size) ? rbuf->size - rbuf->pread : 0;  in dvb_ringbuffer_read()
166 		memcpy(buf, rbuf->data+rbuf->pread, split);  in dvb_ringbuffer_read()
173 		smp_store_release(&rbuf->pread, 0);  in dvb_ringbuffer_read()
175 	memcpy(buf, rbuf->data+rbuf->pread, todo);  in dvb_ringbuffer_read()
178 	smp_store_release(&rbuf->pread, (rbuf->pread + todo) % rbuf->size);  in dvb_ringbuffer_read()
331 	       idx = rbuf->pread;  in dvb_ringbuffer_pkt_next()
338 	consumed = (idx - rbuf->pread);  in dvb_ringbuffer_pkt_next()