Commit 17c2dae3 authored by Lennert Buytenhek's avatar Lennert Buytenhek Committed by David Woodhouse
Browse files

[MTD] physmap: add power management support 



Implement PM handling for physmap.  Idea from Steven Scholz, patch
by David Anders.

Signed-off-by: default avatarLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent 25f0c659

drivers/mtd/maps/physmap.c

+33 −0
Original line number Diff line number Diff line
@@ -158,9 +158,42 @@ static int physmap_flash_probe(struct platform_device *dev) 
	return err;

}



#ifdef CONFIG_PM

static int physmap_flash_suspend(struct platform_device *dev, pm_message_t state)

{

	struct physmap_flash_info *info = platform_get_drvdata(dev);

	int ret = 0;



	if (info)

		ret = info->mtd->suspend(info->mtd);



	return ret;

}



static int physmap_flash_resume(struct platform_device *dev)

{

	struct physmap_flash_info *info = platform_get_drvdata(dev);

	if (info)

		info->mtd->resume(info->mtd);

	return 0;

}



static void physmap_flash_shutdown(struct platform_device *dev)

{

	struct physmap_flash_info *info = platform_get_drvdata(dev);

	if (info && info->mtd->suspend(info->mtd) == 0)

		info->mtd->resume(info->mtd);

}

#endif



static struct platform_driver physmap_flash_driver = {

	.probe		= physmap_flash_probe,

	.remove		= physmap_flash_remove,

#ifdef CONFIG_PM

	.suspend	= physmap_flash_suspend,

	.resume		= physmap_flash_resume,

	.shutdown	= physmap_flash_shutdown,

#endif

	.driver		= {

		.name	= "physmap-flash",

	},