diff options
| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2020-03-18 20:55:24 +0100 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-03-23 13:41:55 +0100 |
| commit | 394216275c7d503d966317da9a01ad6626a6091d (patch) | |
| tree | 7babb0a4ee063a29e9f4cc7c1fd8bec20caabeb5 /arch/s390/kernel/machine_kexec.c | |
| parent | s390/cpuinfo: do not skip info for CPUs without MHz feature (diff) | |
| download | linux-dev-394216275c7d503d966317da9a01ad6626a6091d.tar.xz linux-dev-394216275c7d503d966317da9a01ad6626a6091d.zip | |
s390: remove broken hibernate / power management support
Hibernation is known to be broken for many years on s390. Given that
there aren't any real use cases, remove the code instead of spending
time to fix and maintain it.
Without hibernate support it doesn't make too much sense to keep power
management support; therefore remove it completely.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/machine_kexec.c')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index cb8b1cc285c9..3a854cb5a4c6 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -14,7 +14,6 @@ #include <linux/reboot.h> #include <linux/ftrace.h> #include <linux/debug_locks.h> -#include <linux/suspend.h> #include <asm/cio.h> #include <asm/setup.h> #include <asm/pgtable.h> @@ -39,36 +38,6 @@ extern const unsigned long long relocate_kernel_len; #ifdef CONFIG_CRASH_DUMP /* - * PM notifier callback for kdump - */ -static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action, - void *ptr) -{ - switch (action) { - case PM_SUSPEND_PREPARE: - case PM_HIBERNATION_PREPARE: - if (kexec_crash_image) - arch_kexec_unprotect_crashkres(); - break; - case PM_POST_SUSPEND: - case PM_POST_HIBERNATION: - if (kexec_crash_image) - arch_kexec_protect_crashkres(); - break; - default: - return NOTIFY_DONE; - } - return NOTIFY_OK; -} - -static int __init machine_kdump_pm_init(void) -{ - pm_notifier(machine_kdump_pm_cb, 0); - return 0; -} -arch_initcall(machine_kdump_pm_init); - -/* * Reset the system, copy boot CPU registers to absolute zero, * and jump to the kdump image */ |