436 	dp_entry_t	*dpep;  in dpopen()  local
472 	dpep = kmem_zalloc(sizeof (dp_entry_t), KM_SLEEP);  in dpopen()
479 	dpep->dpe_pcache = pcp;  in dpopen()
485 	devpolltbl[minordev] = dpep;  in dpopen()
499 	dp_entry_t	*dpep;  in dpwrite()  local
514 	dpep = devpolltbl[minor];  in dpwrite()
515 	ASSERT(dpep != NULL);  in dpwrite()
517 	pcp = dpep->dpe_pcache;  in dpwrite()
555 	mutex_enter(&dpep->dpe_lock);  in dpwrite()
556 	dpep->dpe_writerwait++;  in dpwrite()
557 	while (dpep->dpe_refcnt != 0) {  in dpwrite()
558 		if (!cv_wait_sig_swap(&dpep->dpe_cv, &dpep->dpe_lock)) {  in dpwrite()
559 			dpep->dpe_writerwait--;  in dpwrite()
560 			mutex_exit(&dpep->dpe_lock);  in dpwrite()
565 	dpep->dpe_writerwait--;  in dpwrite()
566 	dpep->dpe_flag |= DP_WRITER_PRESENT;  in dpwrite()
567 	dpep->dpe_refcnt++;  in dpwrite()
568 	mutex_exit(&dpep->dpe_lock);  in dpwrite()
683 	mutex_enter(&dpep->dpe_lock);  in dpwrite()
684 	dpep->dpe_flag &= ~DP_WRITER_PRESENT;  in dpwrite()
685 	ASSERT(dpep->dpe_refcnt == 1);  in dpwrite()
686 	dpep->dpe_refcnt--;  in dpwrite()
687 	cv_broadcast(&dpep->dpe_cv);  in dpwrite()
688 	mutex_exit(&dpep->dpe_lock);  in dpwrite()
698 	dp_entry_t	*dpep;  in dpioctl()  local
712 	dpep = devpolltbl[minor];  in dpioctl()
714 	ASSERT(dpep != NULL);  in dpioctl()
715 	pcp = dpep->dpe_pcache;  in dpioctl()
719 	mutex_enter(&dpep->dpe_lock);  in dpioctl()
720 	while ((dpep->dpe_flag & DP_WRITER_PRESENT) ||  in dpioctl()
721 	    (dpep->dpe_writerwait != 0)) {  in dpioctl()
722 		if (!cv_wait_sig_swap(&dpep->dpe_cv, &dpep->dpe_lock)) {  in dpioctl()
723 			mutex_exit(&dpep->dpe_lock);  in dpioctl()
727 	dpep->dpe_refcnt++;  in dpioctl()
728 	mutex_exit(&dpep->dpe_lock);  in dpioctl()
742 			DP_REFRELE(dpep);  in dpioctl()
764 			DP_REFRELE(dpep);  in dpioctl()
794 				DP_REFRELE(dpep);  in dpioctl()
843 				DP_REFRELE(dpep);  in dpioctl()
859 			DP_REFRELE(dpep);  in dpioctl()
869 			DP_REFRELE(dpep);  in dpioctl()
882 				DP_REFRELE(dpep);  in dpioctl()
892 		DP_REFRELE(dpep);  in dpioctl()
895 	DP_REFRELE(dpep);  in dpioctl()
922 	dp_entry_t	*dpep;  in dpclose()  local
931 	dpep = devpolltbl[minor];  in dpclose()
932 	ASSERT(dpep != NULL);  in dpclose()
935 	pcp = dpep->dpe_pcache;  in dpclose()
962 	ASSERT(dpep->dpe_refcnt == 0);  in dpclose()
963 	kmem_free(dpep, sizeof (dp_entry_t));  in dpclose()