diff options
| -rw-r--r-- | hw/xen/xen-backend.c | 27 | ||||
| -rw-r--r-- | hw/xen/xen-bus.c | 3 | ||||
| -rw-r--r-- | include/hw/xen/xen-backend.h | 1 |
3 files changed, 24 insertions, 7 deletions
diff --git a/hw/xen/xen-backend.c b/hw/xen/xen-backend.c index 5b0fb76eae..b9bf70a9f5 100644 --- a/hw/xen/xen-backend.c +++ b/hw/xen/xen-backend.c @@ -101,6 +101,24 @@ static XenBackendInstance *xen_backend_list_find(XenDevice *xendev) return NULL; } +bool xen_backend_exists(const char *type, const char *name) +{ + const XenBackendImpl *impl = xen_backend_table_lookup(type); + XenBackendInstance *backend; + + if (!impl) { + return false; + } + + QLIST_FOREACH(backend, &backend_list, entry) { + if (backend->impl == impl && !strcmp(backend->name, name)) { + return true; + } + } + + return false; +} + static void xen_backend_list_remove(XenBackendInstance *backend) { QLIST_REMOVE(backend, entry); @@ -122,11 +140,6 @@ void xen_backend_device_create(XenBus *xenbus, const char *type, backend->name = g_strdup(name); impl->create(backend, opts, errp); - if (*errp) { - g_free(backend->name); - g_free(backend); - return; - } backend->impl = impl; xen_backend_list_add(backend); @@ -165,7 +178,9 @@ bool xen_backend_try_device_destroy(XenDevice *xendev, Error **errp) } impl = backend->impl; - impl->destroy(backend, errp); + if (backend->xendev) { + impl->destroy(backend, errp); + } xen_backend_list_remove(backend); g_free(backend->name); diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c index 12ff782005..3ffd1a5333 100644 --- a/hw/xen/xen-bus.c +++ b/hw/xen/xen-bus.c @@ -209,7 +209,8 @@ static void xen_bus_type_enumerate(XenBus *xenbus, const char *type) NULL, "%u", &online) != 1) online = 0; - if (online && state == XenbusStateInitialising) { + if (online && state == XenbusStateInitialising && + !xen_backend_exists(type, backend[i])) { Error *local_err = NULL; xen_bus_backend_create(xenbus, type, backend[i], backend_path, diff --git a/include/hw/xen/xen-backend.h b/include/hw/xen/xen-backend.h index aac2fd454d..0f01631ae7 100644 --- a/include/hw/xen/xen-backend.h +++ b/include/hw/xen/xen-backend.h @@ -33,6 +33,7 @@ XenDevice *xen_backend_get_device(XenBackendInstance *backend); void xen_backend_register(const XenBackendInfo *info); const char **xen_backend_get_types(unsigned int *nr); +bool xen_backend_exists(const char *type, const char *name); void xen_backend_device_create(XenBus *xenbus, const char *type, const char *name, QDict *opts, Error **errp); bool xen_backend_try_device_destroy(XenDevice *xendev, Error **errp); |