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authorPeter Oberparleiter <oberpar@linux.ibm.com>2021-06-09 15:46:17 +0200
committerVasily Gorbik <gor@linux.ibm.com>2021-06-18 16:41:20 +0200
commite2f4d7b55b9900a15ed1911b0aead485395b765d (patch)
treeffdac39fc36de812f0a8f187e39f9c84d077ab15 /drivers/s390
parentc749d8c018daf5fba6dfac7b6c5c78b27efd7d65 (diff)
s390/dcssblk: Remove power management support
Power management support was removed for s390 with commit 394216275c7d ("s390: remove broken hibernate / power management support"). Remove leftover dcssblk-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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dcssblk.c106
1 files changed, 3 insertions, 103 deletions
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index da33cb4cba28..b92bddddd64d 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -17,7 +17,6 @@
#include <linux/blkdev.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
-#include <linux/platform_device.h>
#include <linux/pfn_t.h>
#include <linux/uio.h>
#include <linux/dax.h>
@@ -994,94 +993,11 @@ dcssblk_check_params(void)
}
/*
- * Suspend / Resume
- */
-static int dcssblk_freeze(struct device *dev)
-{
- struct dcssblk_dev_info *dev_info;
- int rc = 0;
-
- list_for_each_entry(dev_info, &dcssblk_devices, lh) {
- switch (dev_info->segment_type) {
- case SEG_TYPE_SR:
- case SEG_TYPE_ER:
- case SEG_TYPE_SC:
- if (!dev_info->is_shared)
- rc = -EINVAL;
- break;
- default:
- rc = -EINVAL;
- break;
- }
- if (rc)
- break;
- }
- if (rc)
- pr_err("Suspending the system failed because DCSS device %s "
- "is writable\n",
- dev_info->segment_name);
- return rc;
-}
-
-static int dcssblk_restore(struct device *dev)
-{
- struct dcssblk_dev_info *dev_info;
- struct segment_info *entry;
- unsigned long start, end;
- int rc = 0;
-
- list_for_each_entry(dev_info, &dcssblk_devices, lh) {
- list_for_each_entry(entry, &dev_info->seg_list, lh) {
- segment_unload(entry->segment_name);
- rc = segment_load(entry->segment_name, SEGMENT_SHARED,
- &start, &end);
- if (rc < 0) {
-// TODO in_use check ?
- segment_warning(rc, entry->segment_name);
- goto out_panic;
- }
- if (start != entry->start || end != entry->end) {
- pr_err("The address range of DCSS %s changed "
- "while the system was suspended\n",
- entry->segment_name);
- goto out_panic;
- }
- }
- }
- return 0;
-out_panic:
- panic("fatal dcssblk resume error\n");
-}
-
-static int dcssblk_thaw(struct device *dev)
-{
- return 0;
-}
-
-static const struct dev_pm_ops dcssblk_pm_ops = {
- .freeze = dcssblk_freeze,
- .thaw = dcssblk_thaw,
- .restore = dcssblk_restore,
-};
-
-static struct platform_driver dcssblk_pdrv = {
- .driver = {
- .name = "dcssblk",
- .pm = &dcssblk_pm_ops,
- },
-};
-
-static struct platform_device *dcssblk_pdev;
-
-
-/*
* The init/exit functions.
*/
static void __exit
dcssblk_exit(void)
{
- platform_device_unregister(dcssblk_pdev);
- platform_driver_unregister(&dcssblk_pdrv);
root_device_unregister(dcssblk_root_dev);
unregister_blkdev(dcssblk_major, DCSSBLK_NAME);
}
@@ -1091,22 +1007,9 @@ dcssblk_init(void)
{
int rc;
- rc = platform_driver_register(&dcssblk_pdrv);
- if (rc)
- return rc;
-
- dcssblk_pdev = platform_device_register_simple("dcssblk", -1, NULL,
- 0);
- if (IS_ERR(dcssblk_pdev)) {
- rc = PTR_ERR(dcssblk_pdev);
- goto out_pdrv;
- }
-
dcssblk_root_dev = root_device_register("dcssblk");
- if (IS_ERR(dcssblk_root_dev)) {
- rc = PTR_ERR(dcssblk_root_dev);
- goto out_pdev;
- }
+ if (IS_ERR(dcssblk_root_dev))
+ return PTR_ERR(dcssblk_root_dev);
rc = device_create_file(dcssblk_root_dev, &dev_attr_add);
if (rc)
goto out_root;
@@ -1124,10 +1027,7 @@ dcssblk_init(void)
out_root:
root_device_unregister(dcssblk_root_dev);
-out_pdev:
- platform_device_unregister(dcssblk_pdev);
-out_pdrv:
- platform_driver_unregister(&dcssblk_pdrv);
+
return rc;
}