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Commit cbb2aec3 authored by Klaus-Dieter Wacket's avatar Klaus-Dieter Wacket Committed by Martin Schwidefsky
Browse files

[S390] pm: lcs driver power management callbacks 



Signed-off-by: default avatarKlaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 77812a27

drivers/s390/net/lcs.c

+65 −9
Original line number Diff line number Diff line 
/*

 *  linux/drivers/s390/net/lcs.c

 *

 *  Linux for S/390 Lan Channel Station Network Driver

 *

 *  Copyright (C)  1999-2001 IBM Deutschland Entwicklung GmbH,

 *			     IBM Corporation

 *  Copyright IBM Corp. 1999, 2009

 *  Author(s): Original Code written by

 *			  DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)

 *			DJ Barrow <djbarrow@de.ibm.com,barrow_dj@yahoo.com>

 *	       Rewritten by

 *			  Frank Pavlic (fpavlic@de.ibm.com) and

 *			Frank Pavlic <fpavlic@de.ibm.com> and

 *			Martin Schwidefsky <schwidefsky@de.ibm.com>

 *

 * This program is free software; you can redistribute it and/or modify
@@ -2313,6 +2310,60 @@ lcs_remove_device(struct ccwgroup_device *ccwgdev) 
	put_device(&ccwgdev->dev);

}



static int lcs_pm_suspend(struct lcs_card *card)

{

	if (card->dev)

		netif_device_detach(card->dev);

	lcs_set_allowed_threads(card, 0);

	lcs_wait_for_threads(card, 0xffffffff);

	if (card->state != DEV_STATE_DOWN)

		__lcs_shutdown_device(card->gdev, 1);

	return 0;

}



static int lcs_pm_resume(struct lcs_card *card)

{

	int rc = 0;



	if (card->state == DEV_STATE_RECOVER)

		rc = lcs_new_device(card->gdev);

	if (card->dev)

		netif_device_attach(card->dev);

	if (rc) {

		dev_warn(&card->gdev->dev, "The lcs device driver "

			"failed to recover the device\n");

	}

	return rc;

}



static int lcs_prepare(struct ccwgroup_device *gdev)

{

	return 0;

}



static void lcs_complete(struct ccwgroup_device *gdev)

{

	return;

}



static int lcs_freeze(struct ccwgroup_device *gdev)

{

	struct lcs_card *card = dev_get_drvdata(&gdev->dev);

	return lcs_pm_suspend(card);

}



static int lcs_thaw(struct ccwgroup_device *gdev)

{

	struct lcs_card *card = dev_get_drvdata(&gdev->dev);

	return lcs_pm_resume(card);

}



static int lcs_restore(struct ccwgroup_device *gdev)

{

	struct lcs_card *card = dev_get_drvdata(&gdev->dev);

	return lcs_pm_resume(card);

}



/**

 * LCS ccwgroup driver registration

 */
@@ -2325,6 +2376,11 @@ static struct ccwgroup_driver lcs_group_driver = { 
	.remove      = lcs_remove_device,

	.set_online  = lcs_new_device,

	.set_offline = lcs_shutdown_device,

	.prepare     = lcs_prepare,

	.complete    = lcs_complete,

	.freeze	     = lcs_freeze,

	.thaw	     = lcs_thaw,

	.restore     = lcs_restore,

};



/**