linux/drivers/ps3/sys-manager-core.c
Dan Carpenter 96efbab92c powerpc/ps3: Remove an unneeded NULL check
Static checkers don't like the inconsistent NULL checking on "ops".
This function is only called once and "ops" isn't NULL so the check
can be removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ddc3513dc54d15456692c80df49287fe3babe40a.1585340156.git.geoff@infradead.org
2020-04-03 00:09:59 +11:00

62 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* PS3 System Manager core.
*
* Copyright (C) 2007 Sony Computer Entertainment Inc.
* Copyright 2007 Sony Corp.
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <asm/lv1call.h>
#include <asm/ps3.h>
/**
* Staticly linked routines that allow late binding of a loaded sys-manager
* module.
*/
static struct ps3_sys_manager_ops ps3_sys_manager_ops;
/**
* ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
* @ops: struct ps3_sys_manager_ops.
*
* To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
* register call back ops for power control. Copies data to the static
* variable ps3_sys_manager_ops.
*/
void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
{
BUG_ON(!ops);
BUG_ON(!ops->dev);
ps3_sys_manager_ops = *ops;
}
EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
void __noreturn ps3_sys_manager_power_off(void)
{
if (ps3_sys_manager_ops.power_off)
ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
ps3_sys_manager_halt();
}
void __noreturn ps3_sys_manager_restart(void)
{
if (ps3_sys_manager_ops.restart)
ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
ps3_sys_manager_halt();
}
void __noreturn ps3_sys_manager_halt(void)
{
pr_emerg("System Halted, OK to turn off power\n");
local_irq_disable();
while (1)
lv1_pause(1);
}