forked from mirrors/linux
d75f773c86
%pF and %pf are functionally equivalent to %pS and %ps conversion specifiers. The former are deprecated, therefore switch the current users to use the preferred variant. The changes have been produced by the following command: git grep -l '%p[fF]' | grep -v '^\(tools\|Documentation\)/' | \ while read i; do perl -i -pe 's/%pf/%ps/g; s/%pF/%pS/g;' $i; done And verifying the result. Link: http://lkml.kernel.org/r/20190325193229.23390-1-sakari.ailus@linux.intel.com Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: sparclinux@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: xen-devel@lists.xenproject.org Cc: linux-acpi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: drbd-dev@lists.linbit.com Cc: linux-block@vger.kernel.org Cc: linux-mmc@vger.kernel.org Cc: linux-nvdimm@lists.01.org Cc: linux-pci@vger.kernel.org Cc: linux-scsi@vger.kernel.org Cc: linux-btrfs@vger.kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net Cc: linux-mm@kvack.org Cc: ceph-devel@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: David Sterba <dsterba@suse.com> (for btrfs) Acked-by: Mike Rapoport <rppt@linux.ibm.com> (for mm/memblock.c) Acked-by: Bjorn Helgaas <bhelgaas@google.com> (for drivers/pci) Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* syscore.c - Execution of system core operations.
|
|
*
|
|
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
|
|
*/
|
|
|
|
#include <linux/syscore_ops.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/module.h>
|
|
#include <linux/suspend.h>
|
|
#include <trace/events/power.h>
|
|
|
|
static LIST_HEAD(syscore_ops_list);
|
|
static DEFINE_MUTEX(syscore_ops_lock);
|
|
|
|
/**
|
|
* register_syscore_ops - Register a set of system core operations.
|
|
* @ops: System core operations to register.
|
|
*/
|
|
void register_syscore_ops(struct syscore_ops *ops)
|
|
{
|
|
mutex_lock(&syscore_ops_lock);
|
|
list_add_tail(&ops->node, &syscore_ops_list);
|
|
mutex_unlock(&syscore_ops_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(register_syscore_ops);
|
|
|
|
/**
|
|
* unregister_syscore_ops - Unregister a set of system core operations.
|
|
* @ops: System core operations to unregister.
|
|
*/
|
|
void unregister_syscore_ops(struct syscore_ops *ops)
|
|
{
|
|
mutex_lock(&syscore_ops_lock);
|
|
list_del(&ops->node);
|
|
mutex_unlock(&syscore_ops_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(unregister_syscore_ops);
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
/**
|
|
* syscore_suspend - Execute all the registered system core suspend callbacks.
|
|
*
|
|
* This function is executed with one CPU on-line and disabled interrupts.
|
|
*/
|
|
int syscore_suspend(void)
|
|
{
|
|
struct syscore_ops *ops;
|
|
int ret = 0;
|
|
|
|
trace_suspend_resume(TPS("syscore_suspend"), 0, true);
|
|
pr_debug("Checking wakeup interrupts\n");
|
|
|
|
/* Return error code if there are any wakeup interrupts pending. */
|
|
if (pm_wakeup_pending())
|
|
return -EBUSY;
|
|
|
|
WARN_ONCE(!irqs_disabled(),
|
|
"Interrupts enabled before system core suspend.\n");
|
|
|
|
list_for_each_entry_reverse(ops, &syscore_ops_list, node)
|
|
if (ops->suspend) {
|
|
if (initcall_debug)
|
|
pr_info("PM: Calling %pS\n", ops->suspend);
|
|
ret = ops->suspend();
|
|
if (ret)
|
|
goto err_out;
|
|
WARN_ONCE(!irqs_disabled(),
|
|
"Interrupts enabled after %pS\n", ops->suspend);
|
|
}
|
|
|
|
trace_suspend_resume(TPS("syscore_suspend"), 0, false);
|
|
return 0;
|
|
|
|
err_out:
|
|
pr_err("PM: System core suspend callback %pS failed.\n", ops->suspend);
|
|
|
|
list_for_each_entry_continue(ops, &syscore_ops_list, node)
|
|
if (ops->resume)
|
|
ops->resume();
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscore_suspend);
|
|
|
|
/**
|
|
* syscore_resume - Execute all the registered system core resume callbacks.
|
|
*
|
|
* This function is executed with one CPU on-line and disabled interrupts.
|
|
*/
|
|
void syscore_resume(void)
|
|
{
|
|
struct syscore_ops *ops;
|
|
|
|
trace_suspend_resume(TPS("syscore_resume"), 0, true);
|
|
WARN_ONCE(!irqs_disabled(),
|
|
"Interrupts enabled before system core resume.\n");
|
|
|
|
list_for_each_entry(ops, &syscore_ops_list, node)
|
|
if (ops->resume) {
|
|
if (initcall_debug)
|
|
pr_info("PM: Calling %pS\n", ops->resume);
|
|
ops->resume();
|
|
WARN_ONCE(!irqs_disabled(),
|
|
"Interrupts enabled after %pS\n", ops->resume);
|
|
}
|
|
trace_suspend_resume(TPS("syscore_resume"), 0, false);
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscore_resume);
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
/**
|
|
* syscore_shutdown - Execute all the registered system core shutdown callbacks.
|
|
*/
|
|
void syscore_shutdown(void)
|
|
{
|
|
struct syscore_ops *ops;
|
|
|
|
mutex_lock(&syscore_ops_lock);
|
|
|
|
list_for_each_entry_reverse(ops, &syscore_ops_list, node)
|
|
if (ops->shutdown) {
|
|
if (initcall_debug)
|
|
pr_info("PM: Calling %pS\n", ops->shutdown);
|
|
ops->shutdown();
|
|
}
|
|
|
|
mutex_unlock(&syscore_ops_lock);
|
|
}
|