iscsi-target: fix iscsit_del_np deadlock on unload

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / target / iscsi / iscsi_target_login.c

diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index cad6fdc..d509aa7 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -1196,7 +1196,7 @@ old_sess_out:
 static int __iscsi_target_login_thread(struct iscsi_np *np)
 {
        u8 *buffer, zero_tsih = 0;
-       int ret = 0, rc, stop;
+       int ret = 0, rc;
        struct iscsi_conn *conn = NULL;
        struct iscsi_login *login;
        struct iscsi_portal_group *tpg = NULL;
@@ -1210,6 +1210,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
        if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
                np->np_thread_state = ISCSI_NP_THREAD_ACTIVE;
                complete(&np->np_restart_comp);
+       } else if (np->np_thread_state == ISCSI_NP_THREAD_SHUTDOWN) {
+               spin_unlock_bh(&np->np_thread_lock);
+               goto exit;
        } else {
                np->np_thread_state = ISCSI_NP_THREAD_ACTIVE;
        }
@@ -1402,10 +1405,8 @@ old_sess_out:
        }
 
 out:
-       stop = kthread_should_stop();
-       /* Wait for another socket.. */
-       if (!stop)
-               return 1;
+       return 1;
+
 exit:
        iscsi_stop_login_thread_timer(np);
        spin_lock_bh(&np->np_thread_lock);
@@ -1422,7 +1423,7 @@ int iscsi_target_login_thread(void *arg)
 
        allow_signal(SIGINT);
 
-       while (!kthread_should_stop()) {
+       while (1) {
                ret = __iscsi_target_login_thread(np);
                /*
                 * We break and exit here unless another sock_accept() call