[S390] add hook to reenable mss after hibernation

[deliverable/linux.git] / drivers / s390 / cio / css.c

diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 2769da54f2b96ebf9f26f86ff76c049ff71c5e82..511649115bd7e0163d3283db97161ab179e8dbf4 100644 (file)
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -870,15 +870,10 @@ static int __init css_bus_init(void)
 
        /* Try to enable MSS. */
        ret = chsc_enable_facility(CHSC_SDA_OC_MSS);
-       switch (ret) {
-       case 0: /* Success. */
-               max_ssid = __MAX_SSID;
-               break;
-       case -ENOMEM:
-               goto out;
-       default:
+       if (ret)
                max_ssid = 0;
-       }
+       else /* Success. */
+               max_ssid = __MAX_SSID;
 
        ret = slow_subchannel_init();
        if (ret)
@@ -1048,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void)
 }
 subsys_initcall_sync(channel_subsystem_init_sync);
 
+void channel_subsystem_reinit(void)
+{
+       chsc_enable_facility(CHSC_SDA_OC_MSS);
+}
+
 #ifdef CONFIG_PROC_FS
 static ssize_t cio_settle_write(struct file *file, const char __user *buf,
                                size_t count, loff_t *ppos)