9480e307cd
In PM v1, all devices were called at SUSPEND_DISABLE level. Then all devices were called at SUSPEND_SAVE_STATE level, and finally SUSPEND_POWER_DOWN level. However, with PM v2, to maintain compatibility for platform devices, I arranged for the PM v2 suspend/resume callbacks to call the old PM v1 suspend/resume callbacks three times with each level in order so that existing drivers continued to work. Since this is obsolete infrastructure which is no longer necessary, we can remove it. Here's an (untested) patch to do exactly that. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/*
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* Linux driver model AC97 bus interface
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*
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* Author: Nicolas Pitre
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* Created: Jan 14, 2005
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* Copyright: (C) MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/string.h>
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/*
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* Let drivers decide whether they want to support given codec from their
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* probe method. Drivers have direct access to the ac97_t structure and may
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* decide based on the id field amongst other things.
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*/
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static int ac97_bus_match(struct device *dev, struct device_driver *drv)
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{
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return 1;
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}
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static int ac97_bus_suspend(struct device *dev, pm_message_t state)
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{
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int ret = 0;
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if (dev->driver && dev->driver->suspend)
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ret = dev->driver->suspend(dev, state);
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return ret;
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}
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static int ac97_bus_resume(struct device *dev)
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{
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int ret = 0;
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if (dev->driver && dev->driver->resume)
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ret = dev->driver->resume(dev);
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return ret;
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}
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struct bus_type ac97_bus_type = {
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.name = "ac97",
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.match = ac97_bus_match,
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.suspend = ac97_bus_suspend,
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.resume = ac97_bus_resume,
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};
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static int __init ac97_bus_init(void)
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{
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return bus_register(&ac97_bus_type);
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}
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subsys_initcall(ac97_bus_init);
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static void __exit ac97_bus_exit(void)
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{
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bus_unregister(&ac97_bus_type);
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}
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module_exit(ac97_bus_exit);
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EXPORT_SYMBOL(ac97_bus_type);
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MODULE_LICENSE("GPL");
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