"lstat->last_intr_fail_ip_addr" is an array inside the "lstat" struct.
It's never NULL so we always print "ipv6\n" here.  The test should be
"if (lstat->last_intr_fail_ip_family == AF_INET6)".

We don't need the temporary buffer either.  We could print directly into
"page".

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
Compile tested only.

diff --git a/drivers/target/iscsi/iscsi_target_stat.c 
b/drivers/target/iscsi/iscsi_target_stat.c
index 421d694..54a6f38 100644
--- a/drivers/target/iscsi/iscsi_target_stat.c
+++ b/drivers/target/iscsi/iscsi_target_stat.c
@@ -410,14 +410,16 @@ static ssize_t 
iscsi_stat_tgt_attr_show_attr_fail_intr_addr_type(
        struct iscsi_tiqn *tiqn = container_of(igrps,
                        struct iscsi_tiqn, tiqn_stat_grps);
        struct iscsi_login_stats *lstat = &tiqn->login_stats;
-       unsigned char buf[8];
+       int ret;
 
        spin_lock(&lstat->lock);
-       snprintf(buf, 8, "%s", (lstat->last_intr_fail_ip_addr != NULL) ?
-                               "ipv6" : "ipv4");
+       if (lstat->last_intr_fail_ip_family == AF_INET6)
+               ret = snprintf(page, PAGE_SIZE, "ipv6\n");
+       else
+               ret = snprintf(page, PAGE_SIZE, "ipv4\n");
        spin_unlock(&lstat->lock);
 
-       return snprintf(page, PAGE_SIZE, "%s\n", buf);
+       return ret;
 }
 ISCSI_STAT_TGT_ATTR_RO(fail_intr_addr_type);
 
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