[src/trunk]: src/sys/external/bsd/drm2/linux drm: Release fence after use.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7a1095910330
branches:  trunk
changeset: 379911:7a1095910330
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Jun 27 08:10:36 2021 +0000

description:
drm: Release fence after use.

May plug the dreaded radeon kmem memory leak.

XXX pullup-9

diffstat:

 sys/external/bsd/drm2/linux/linux_reservation.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 41ba5ab50400 -r 7a1095910330 sys/external/bsd/drm2/linux/linux_reservation.c
--- a/sys/external/bsd/drm2/linux/linux_reservation.c   Sun Jun 27 05:25:12 2021 +0000
+++ b/sys/external/bsd/drm2/linux/linux_reservation.c   Sun Jun 27 08:10:36 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_reservation.c,v 1.11 2018/09/03 18:02:11 riastradh Exp $ */
+/*     $NetBSD: linux_reservation.c,v 1.12 2021/06/27 08:10:36 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_reservation.c,v 1.11 2018/09/03 18:02:11 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_reservation.c,v 1.12 2021/06/27 08:10:36 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/poll.h>
@@ -796,6 +796,7 @@ wait:
        ret = fence_wait_timeout(fence, intr, timeout);
        if (ret <= 0)
                return ret;
+       fence_put(fence);
        KASSERT(ret <= timeout);
        timeout = ret;
        goto top;