From e88a0faae5baaaa3bdc6f23a55ad6bc7a7b4aa77 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Sat, 24 Jan 2009 08:22:47 +0000 Subject: [PATCH] xen: unitialised return value in xenbus_write_transaction The return value of xenbus_write_transaction can be uninitialised in the success case leading to the userspace xenstore utilities failing. Signed-off-by: Ian Campbell Signed-off-by: Ingo Molnar --- drivers/xen/xenfs/xenbus.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/xen/xenfs/xenbus.c b/drivers/xen/xenfs/xenbus.c index 875a4c59c594..a9592d981b10 100644 --- a/drivers/xen/xenfs/xenbus.c +++ b/drivers/xen/xenfs/xenbus.c @@ -291,7 +291,7 @@ static void watch_fired(struct xenbus_watch *watch, static int xenbus_write_transaction(unsigned msg_type, struct xenbus_file_priv *u) { - int rc, ret; + int rc; void *reply; struct xenbus_transaction_holder *trans = NULL; LIST_HEAD(staging_q); @@ -326,15 +326,14 @@ static int xenbus_write_transaction(unsigned msg_type, } mutex_lock(&u->reply_mutex); - ret = queue_reply(&staging_q, &u->u.msg, sizeof(u->u.msg)); - if (!ret) - ret = queue_reply(&staging_q, reply, u->u.msg.len); - if (!ret) { + rc = queue_reply(&staging_q, &u->u.msg, sizeof(u->u.msg)); + if (!rc) + rc = queue_reply(&staging_q, reply, u->u.msg.len); + if (!rc) { list_splice_tail(&staging_q, &u->read_buffers); wake_up(&u->read_waitq); } else { queue_cleanup(&staging_q); - rc = ret; } mutex_unlock(&u->reply_mutex); -- 2.30.2