[S390] pm: lcs driver power management callbacks
Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -1,15 +1,12 @@
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/*
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* linux/drivers/s390/net/lcs.c
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*
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* Linux for S/390 Lan Channel Station Network Driver
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*
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* Copyright (C) 1999-2001 IBM Deutschland Entwicklung GmbH,
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* IBM Corporation
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* Author(s): Original Code written by
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* DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
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* Rewritten by
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* Frank Pavlic (fpavlic@de.ibm.com) and
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Copyright IBM Corp. 1999, 2009
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* Author(s): Original Code written by
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* DJ Barrow <djbarrow@de.ibm.com,barrow_dj@yahoo.com>
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* Rewritten by
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* Frank Pavlic <fpavlic@de.ibm.com> and
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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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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@ -2313,6 +2310,60 @@ lcs_remove_device(struct ccwgroup_device *ccwgdev)
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put_device(&ccwgdev->dev);
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}
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static int lcs_pm_suspend(struct lcs_card *card)
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{
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if (card->dev)
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netif_device_detach(card->dev);
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lcs_set_allowed_threads(card, 0);
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lcs_wait_for_threads(card, 0xffffffff);
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if (card->state != DEV_STATE_DOWN)
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__lcs_shutdown_device(card->gdev, 1);
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return 0;
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}
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static int lcs_pm_resume(struct lcs_card *card)
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{
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int rc = 0;
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if (card->state == DEV_STATE_RECOVER)
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rc = lcs_new_device(card->gdev);
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if (card->dev)
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netif_device_attach(card->dev);
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if (rc) {
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dev_warn(&card->gdev->dev, "The lcs device driver "
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"failed to recover the device\n");
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}
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return rc;
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}
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static int lcs_prepare(struct ccwgroup_device *gdev)
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{
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return 0;
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}
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static void lcs_complete(struct ccwgroup_device *gdev)
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{
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return;
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}
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static int lcs_freeze(struct ccwgroup_device *gdev)
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{
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struct lcs_card *card = dev_get_drvdata(&gdev->dev);
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return lcs_pm_suspend(card);
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}
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static int lcs_thaw(struct ccwgroup_device *gdev)
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{
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struct lcs_card *card = dev_get_drvdata(&gdev->dev);
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return lcs_pm_resume(card);
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}
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static int lcs_restore(struct ccwgroup_device *gdev)
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{
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struct lcs_card *card = dev_get_drvdata(&gdev->dev);
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return lcs_pm_resume(card);
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}
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/**
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* LCS ccwgroup driver registration
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*/
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@ -2325,6 +2376,11 @@ static struct ccwgroup_driver lcs_group_driver = {
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.remove = lcs_remove_device,
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.set_online = lcs_new_device,
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.set_offline = lcs_shutdown_device,
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.prepare = lcs_prepare,
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.complete = lcs_complete,
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.freeze = lcs_freeze,
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.thaw = lcs_thaw,
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.restore = lcs_restore,
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};
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/**
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