[patch] target: strlen() doesn't count the terminator

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This test is off by one because the NUL terminator isn't taken into
consideration.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 494bfa4..4793875 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -120,7 +120,7 @@ struct iscsi_tiqn *iscsit_add_tiqn(unsigned char *buf)
 	struct iscsi_tiqn *tiqn = NULL;
 	int ret;
 
-	if (strlen(buf) > ISCSI_IQN_LEN) {
+	if (strlen(buf) >= ISCSI_IQN_LEN) {
 		pr_err("Target IQN exceeds %d bytes\n",
 				ISCSI_IQN_LEN);
 		return ERR_PTR(-EINVAL);
--
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