1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 25144a0ff07c..10d67802a2fb 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -864,7 +864,7 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info,
         struct list_head *head = &(info->v2p_entry_lists);
         unsigned long flags;
         char *lunp;
-        unsigned int unpacked_lun;
+        unsigned long long unpacked_lun;
         struct se_lun *se_lun;
         struct scsiback_tpg *tpg_entry, *tpg = NULL;
         char *error = "doesn't exist";
@@ -876,9 +876,10 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info,
         }
         *lunp = 0;
         lunp++;
-        if (kstrtouint(lunp, 10, &unpacked_lun) || unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
+        err = kstrtoull(lunp, 10, &unpacked_lun);
+        if (err < 0) {
                 pr_err("lun number not valid: %s\n", lunp);
-                return -EINVAL;
+                return err;
         }
 
         mutex_lock(&scsiback_mutex);