[src/trunk]: src/sys/external/bsd/drm2/linux drm: Fix missing restart on race...

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

details:   https://anonhg.NetBSD.org/src/rev/c09751cef8f4
branches:  trunk
changeset: 1028948:c09751cef8f4
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 12:33:34 2021 +0000

description:
drm: Fix missing restart on race in dma_resv_get_fences_rcu.

diffstat:

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

diffs (26 lines):

diff -r 9d3f6039e663 -r c09751cef8f4 sys/external/bsd/drm2/linux/linux_dma_resv.c
--- a/sys/external/bsd/drm2/linux/linux_dma_resv.c      Sun Dec 19 12:33:26 2021 +0000
+++ b/sys/external/bsd/drm2/linux/linux_dma_resv.c      Sun Dec 19 12:33:34 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_dma_resv.c,v 1.18 2021/12/19 12:32:53 riastradh Exp $    */
+/*     $NetBSD: linux_dma_resv.c,v 1.19 2021/12/19 12:33:34 riastradh Exp $    */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_dma_resv.c,v 1.18 2021/12/19 12:32:53 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_dma_resv.c,v 1.19 2021/12/19 12:33:34 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/poll.h>
@@ -818,6 +818,7 @@
                            GFP_KERNEL);
                        if (shared == NULL)
                                return -ENOMEM;
+                       goto top;
                }
 
                /*