s390/sclp: Remove memory hotplug power management support

Power management support was removed for s390 with
commit 394216275c7d ("s390: remove broken hibernate / power management
support").

Remove leftover sclp memory hotplug-related power management code.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index d41bc14..ab0518c 100644 (file)
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -20,7 +20,6 @@
 #include <linux/mmzone.h>
 #include <linux/memory.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
 #include <asm/ctl_reg.h>
 #include <asm/chpid.h>
 #include <asm/setup.h>
@@ -168,7 +167,6 @@ static DEFINE_MUTEX(sclp_mem_mutex);
 static LIST_HEAD(sclp_mem_list);
 static u8 sclp_max_storage_id;
 static DECLARE_BITMAP(sclp_storage_ids, 256);
-static int sclp_mem_state_changed;
 
 struct memory_increment {
        struct list_head list;
@@ -359,8 +357,6 @@ static int sclp_mem_notifier(struct notifier_block *nb,
                rc = -EINVAL;
                break;
        }
-       if (!rc)
-               sclp_mem_state_changed = 1;
        mutex_unlock(&sclp_mem_mutex);
        return rc ? NOTIFY_BAD : NOTIFY_OK;
 }
@@ -456,28 +452,8 @@ static void __init insert_increment(u16 rn, int standby, int assigned)
        list_add(&new_incr->list, prev);
 }
 
-static int sclp_mem_freeze(struct device *dev)
-{
-       if (!sclp_mem_state_changed)
-               return 0;
-       pr_err("Memory hotplug state changed, suspend refused.\n");
-       return -EPERM;
-}
-
-static const struct dev_pm_ops sclp_mem_pm_ops = {
-       .freeze         = sclp_mem_freeze,
-};
-
-static struct platform_driver sclp_mem_pdrv = {
-       .driver = {
-               .name   = "sclp_mem",
-               .pm     = &sclp_mem_pm_ops,
-       },
-};
-
 static int __init sclp_detect_standby_memory(void)
 {
-       struct platform_device *sclp_pdev;
        struct read_storage_sccb *sccb;
        int i, id, assigned, rc;
 
@@ -530,17 +506,7 @@ static int __init sclp_detect_standby_memory(void)
        rc = register_memory_notifier(&sclp_mem_nb);
        if (rc)
                goto out;
-       rc = platform_driver_register(&sclp_mem_pdrv);
-       if (rc)
-               goto out;
-       sclp_pdev = platform_device_register_simple("sclp_mem", -1, NULL, 0);
-       rc = PTR_ERR_OR_ZERO(sclp_pdev);
-       if (rc)
-               goto out_driver;
        sclp_add_standby_memory();
-       goto out;
-out_driver:
-       platform_driver_unregister(&sclp_mem_pdrv);
 out:
        free_page((unsigned long) sccb);
        return rc;