Lines Matching refs:ch_bufring
325 KASSERT(chan->ch_bufring == NULL, ("bufrings are allocated"));
326 chan->ch_bufring = hyperv_dmamem_alloc(bus_get_dma_tag(chan->ch_dev),
329 if (chan->ch_bufring == NULL) {
334 cbr.cbr = chan->ch_bufring;
354 chan->ch_bufring);
356 chan->ch_bufring = NULL;
910 chan->ch_bufring = NULL;
923 if (chan->ch_bufring != NULL) {
924 hyperv_dmamem_free(&chan->ch_bufring_dma, chan->ch_bufring);
925 chan->ch_bufring = NULL;