From 78c045c08a393285e615260c50cedf9cea5a7fa1 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <hca@linux.ibm.com>
Date: Tue, 29 Nov 2022 17:31:45 +0100
Subject: s390/appldata: remove power management callbacks

Support for power managemant has been removed from s390 since quite
some time. Therefore remove unused power managemant code from the
appldata device driver.

Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
---
 arch/s390/appldata/appldata_base.c | 113 +------------------------------------
 1 file changed, 2 insertions(+), 111 deletions(-)

(limited to 'arch/s390/appldata/appldata_base.c')

diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index d74a4c7d5df6..c0fd29133f27 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -26,8 +26,6 @@
 #include <linux/notifier.h>
 #include <linux/cpu.h>
 #include <linux/workqueue.h>
-#include <linux/suspend.h>
-#include <linux/platform_device.h>
 #include <asm/appldata.h>
 #include <asm/vtimer.h>
 #include <linux/uaccess.h>
@@ -44,8 +42,6 @@
 #define TOD_MICRO	0x01000			/* nr. of TOD clock units
 						   for 1 microsecond */
 
-static struct platform_device *appldata_pdev;
-
 /*
  * /proc entries (sysctl)
  */
@@ -88,7 +84,6 @@ static struct vtimer_list appldata_timer;
 static DEFINE_SPINLOCK(appldata_timer_lock);
 static int appldata_interval = APPLDATA_CPU_INTERVAL;
 static int appldata_timer_active;
-static int appldata_timer_suspended = 0;
 
 /*
  * Work queue
@@ -412,88 +407,6 @@ void appldata_unregister_ops(struct appldata_ops *ops)
 /********************** module-ops management <END> **************************/
 
 
-/**************************** suspend / resume *******************************/
-static int appldata_freeze(struct device *dev)
-{
-	struct appldata_ops *ops;
-	int rc;
-	struct list_head *lh;
-
-	spin_lock(&appldata_timer_lock);
-	if (appldata_timer_active) {
-		__appldata_vtimer_setup(APPLDATA_DEL_TIMER);
-		appldata_timer_suspended = 1;
-	}
-	spin_unlock(&appldata_timer_lock);
-
-	mutex_lock(&appldata_ops_mutex);
-	list_for_each(lh, &appldata_ops_list) {
-		ops = list_entry(lh, struct appldata_ops, list);
-		if (ops->active == 1) {
-			rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
-					(unsigned long) ops->data, ops->size,
-					ops->mod_lvl);
-			if (rc != 0)
-				pr_err("Stopping the data collection for %s "
-				       "failed with rc=%d\n", ops->name, rc);
-		}
-	}
-	mutex_unlock(&appldata_ops_mutex);
-	return 0;
-}
-
-static int appldata_restore(struct device *dev)
-{
-	struct appldata_ops *ops;
-	int rc;
-	struct list_head *lh;
-
-	spin_lock(&appldata_timer_lock);
-	if (appldata_timer_suspended) {
-		__appldata_vtimer_setup(APPLDATA_ADD_TIMER);
-		appldata_timer_suspended = 0;
-	}
-	spin_unlock(&appldata_timer_lock);
-
-	mutex_lock(&appldata_ops_mutex);
-	list_for_each(lh, &appldata_ops_list) {
-		ops = list_entry(lh, struct appldata_ops, list);
-		if (ops->active == 1) {
-			ops->callback(ops->data);	// init record
-			rc = appldata_diag(ops->record_nr,
-					APPLDATA_START_INTERVAL_REC,
-					(unsigned long) ops->data, ops->size,
-					ops->mod_lvl);
-			if (rc != 0) {
-				pr_err("Starting the data collection for %s "
-				       "failed with rc=%d\n", ops->name, rc);
-			}
-		}
-	}
-	mutex_unlock(&appldata_ops_mutex);
-	return 0;
-}
-
-static int appldata_thaw(struct device *dev)
-{
-	return appldata_restore(dev);
-}
-
-static const struct dev_pm_ops appldata_pm_ops = {
-	.freeze		= appldata_freeze,
-	.thaw		= appldata_thaw,
-	.restore	= appldata_restore,
-};
-
-static struct platform_driver appldata_pdrv = {
-	.driver = {
-		.name	= "appldata",
-		.pm	= &appldata_pm_ops,
-	},
-};
-/************************* suspend / resume <END> ****************************/
-
-
 /******************************* init / exit *********************************/
 
 /*
@@ -503,36 +416,14 @@ static struct platform_driver appldata_pdrv = {
  */
 static int __init appldata_init(void)
 {
-	int rc;
-
 	init_virt_timer(&appldata_timer);
 	appldata_timer.function = appldata_timer_function;
 	appldata_timer.data = (unsigned long) &appldata_work;
-
-	rc = platform_driver_register(&appldata_pdrv);
-	if (rc)
-		return rc;
-
-	appldata_pdev = platform_device_register_simple("appldata", -1, NULL,
-							0);
-	if (IS_ERR(appldata_pdev)) {
-		rc = PTR_ERR(appldata_pdev);
-		goto out_driver;
-	}
 	appldata_wq = alloc_ordered_workqueue("appldata", 0);
-	if (!appldata_wq) {
-		rc = -ENOMEM;
-		goto out_device;
-	}
-
+	if (!appldata_wq)
+		return -ENOMEM;
 	appldata_sysctl_header = register_sysctl_table(appldata_dir_table);
 	return 0;
-
-out_device:
-	platform_device_unregister(appldata_pdev);
-out_driver:
-	platform_driver_unregister(&appldata_pdrv);
-	return rc;
 }
 
 __initcall(appldata_init);
-- 
cgit