From 4becebdf9edc22812a6fab3afdacc05af363dc7e Mon Sep 17 00:00:00 2001
From: Conrad Meyer <cem@FreeBSD.org>
Date: Sat, 24 Oct 2015 23:45:56 +0000
Subject: [PATCH] ioat: Always re-arm interrupts in process_events

It doesn't hurt, even if there is nothing to do.

Sponsored by:	EMC / Isilon Storage Division
---
 sys/dev/ioat/ioat.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sys/dev/ioat/ioat.c b/sys/dev/ioat/ioat.c
index 730d2b3faad..4daefb14022 100644
--- a/sys/dev/ioat/ioat.c
+++ b/sys/dev/ioat/ioat.c
@@ -575,10 +575,8 @@ ioat_process_events(struct ioat_softc *ioat)
 
 	ioat_log_message(3, "%s\n", __func__);
 
-	if (status == ioat->last_seen) {
-	 	mtx_unlock(&ioat->cleanup_lock);
-		return;
-	}
+	if (status == ioat->last_seen)
+		goto out;
 
 	while (1) {
 		desc = ioat_get_ring_entry(ioat, ioat->tail);
@@ -602,6 +600,7 @@ ioat_process_events(struct ioat_softc *ioat)
 		    ioat_timer_callback, ioat);
 	}
 
+out:
 	ioat_write_chanctrl(ioat, IOAT_CHANCTRL_RUN);
 	mtx_unlock(&ioat->cleanup_lock);