From f59101231a5513bfa12149504f3ba26323962332 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Sun, 24 May 2020 02:43:21 +0200
Subject: [PATCH] usbehci: release ctlr ilock before calling pollcheck()

---
 sys/src/9/port/usbehci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/src/9/port/usbehci.c b/sys/src/9/port/usbehci.c
index 5ac7486cf..6b1c9f12e 100644
--- a/sys/src/9/port/usbehci.c
+++ b/sys/src/9/port/usbehci.c
@@ -2327,9 +2327,11 @@ epiowait(Hci *hp, Qio *io, int tmout, ulong load)
 	if(qh->state == Qrun){
 		ctlrinterrupt(ctlr);
 		if(qh->state == Qdone){
+			iunlock(ctlr);
 			dqprint("ehci %#p: polling required\n", ctlr->capio);
 			ctlr->poll.must = 1;
 			pollcheck(hp);
+			ilock(ctlr);
 		}
 	}