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authorJuergen Gross <jgross@suse.com>2016-02-08 15:30:18 +0100
committerDavid Vrabel <david.vrabel@citrix.com>2016-02-08 16:44:40 +0000
commitf285aa8db7cc4432c1a03f8b55ff34fe96317c11 (patch)
tree66a8e6ac3118ac726974bdc0ae04b9ea8a7f830b /drivers/xen
parenta4cdb556cae05cd3e7b602b3a44c01420c4e2258 (diff)
downloadlinux-f285aa8db7cc4432c1a03f8b55ff34fe96317c11.tar.bz2
xen/scsiback: correct frontend counting
When adding a new frontend to xen-scsiback don't decrement the number of active frontends in case of no error. Doing so results in a failure when trying to remove the xen-pvscsi nexus even if no domain is using it. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xen-scsiback.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index ad4eb1024d1f..51387d75c7bf 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -939,12 +939,12 @@ out:
spin_unlock_irqrestore(&info->v2p_lock, flags);
out_free:
- mutex_lock(&tpg->tv_tpg_mutex);
- tpg->tv_tpg_fe_count--;
- mutex_unlock(&tpg->tv_tpg_mutex);
-
- if (err)
+ if (err) {
+ mutex_lock(&tpg->tv_tpg_mutex);
+ tpg->tv_tpg_fe_count--;
+ mutex_unlock(&tpg->tv_tpg_mutex);
kfree(new);
+ }
return err;
}