Patch-mainline: never (revert original patch due to kabi)
References: bsc#1179508 XSA-349 CVE-2020-29568
From: Juergen Gross <jgross@suse.com>
Date: Tue, 22 Dec 2020 10:24:55 +0100
Subject: [PATCH] xen: revert Disallow pending watch messages

Due to kabi changes revert original patch
"xenbus/xenbus_backend: Disallow pending watch messages"
(commit 9996bd494794a2fe393e97e7a982388c6249aa76 upstream).

The issue will be fixed differently in a followup patch.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
 drivers/xen/xenbus/xenbus_probe_backend.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c b/drivers/xen/xenbus/xenbus_probe_backend.c
index 4bb603051d5b..b0bed4faf44c 100644
--- a/drivers/xen/xenbus/xenbus_probe_backend.c
+++ b/drivers/xen/xenbus/xenbus_probe_backend.c
@@ -180,12 +180,6 @@ static int xenbus_probe_backend(struct xen_bus_type *bus, const char *type,
 	return err;
 }
 
-static bool frontend_will_handle(struct xenbus_watch *watch,
-				 const char *path, const char *token)
-{
-	return watch->nr_pending == 0;
-}
-
 static void frontend_changed(struct xenbus_watch *watch,
 			     const char *path, const char *token)
 {
@@ -197,7 +191,6 @@ static struct xen_bus_type xenbus_backend = {
 	.levels = 3,		/* backend/type/<frontend>/<id> */
 	.get_bus_id = backend_bus_id,
 	.probe = xenbus_probe_backend,
-	.otherend_will_handle = frontend_will_handle,
 	.otherend_changed = frontend_changed,
 	.bus = {
 		.name		= "xen-backend",
-- 
2.26.2