ceph: don't crash when passed bad mount options

This only happened when parse_extra_token was not passed
to ceph_parse_option() (hence, only happened in rbd).

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index f6f2eebc0767..f3e4a13fea0c 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -249,7 +249,7 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
                         continue;
                 err = -EINVAL;
                 token = match_token((char *)c, opt_tokens, argstr);
-                if (token < 0) {
+                if (token < 0 && parse_extra_token) {
                         /* extra? */
                         err = parse_extra_token((char *)c, private);
                         if (err < 0) {