diff options
| author | SeongJae Park <sjpark@amazon.de> | 2020-12-14 10:05:47 +0100 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2020-12-14 10:05:47 +0100 |
| commit | be987200fbaceaef340872841d4f7af2c5ee8dc3 (patch) | |
| tree | 431f88bcf2e666092e7c70a01103896e28beefb2 | |
| parent | xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path() (diff) | |
| download | linux-be987200fbaceaef340872841d4f7af2c5ee8dc3.tar.xz linux-be987200fbaceaef340872841d4f7af2c5ee8dc3.zip | |
xen/xenbus/xen_bus_type: Support will_handle watch callback
This commit adds support of the 'will_handle' watch callback for
'xen_bus_type' users.
This is part of XSA-349
Cc: stable@vger.kernel.org
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Reported-by: Michael Kurth <mku@amazon.de>
Reported-by: Pawel Wieczorkiewicz <wipawel@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
| -rw-r--r-- | drivers/xen/xenbus/xenbus.h | 2 | ||||
| -rw-r--r-- | drivers/xen/xenbus/xenbus_probe.c | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/xen/xenbus/xenbus.h b/drivers/xen/xenbus/xenbus.h index 5f5b8a7d5b80..2a93b7c9c159 100644 --- a/drivers/xen/xenbus/xenbus.h +++ b/drivers/xen/xenbus/xenbus.h @@ -44,6 +44,8 @@ struct xen_bus_type { int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename); int (*probe)(struct xen_bus_type *bus, const char *type, const char *dir); + bool (*otherend_will_handle)(struct xenbus_watch *watch, + const char *path, const char *token); void (*otherend_changed)(struct xenbus_watch *watch, const char *path, const char *token); struct bus_type bus; diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 4c3d1b84aa0a..44634d970a5c 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -136,7 +136,8 @@ static int watch_otherend(struct xenbus_device *dev) container_of(dev->dev.bus, struct xen_bus_type, bus); return xenbus_watch_pathfmt(dev, &dev->otherend_watch, - NULL, bus->otherend_changed, + bus->otherend_will_handle, + bus->otherend_changed, "%s/%s", dev->otherend, "state"); } |