From patchwork Mon Dec 18 16:21:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 10120659 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 92C0560327 for ; Mon, 18 Dec 2017 16:22:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8477028A05 for ; Mon, 18 Dec 2017 16:22:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 77C1428CFA; Mon, 18 Dec 2017 16:22:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1643F28A05 for ; Mon, 18 Dec 2017 16:22:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936557AbdLRQVi (ORCPT ); Mon, 18 Dec 2017 11:21:38 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58940 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935199AbdLRQVe (ORCPT ); Mon, 18 Dec 2017 11:21:34 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9446F883A5; Mon, 18 Dec 2017 16:21:34 +0000 (UTC) Received: from localhost (unknown [10.40.205.85]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D51626929A; Mon, 18 Dec 2017 16:21:31 +0000 (UTC) From: Cornelia Huck To: mst@redhat.com Cc: jasowang@redhat.com, pasic@linux.vnet.ibm.com, linux-s390@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, Christian Borntraeger , Cornelia Huck Subject: [PULL v2 1/1] virtio/s390: implement PM operations for virtio_ccw Date: Mon, 18 Dec 2017 17:21:23 +0100 Message-Id: <20171218162123.963-2-cohuck@redhat.com> In-Reply-To: <20171218162123.963-1-cohuck@redhat.com> References: <20171218162123.963-1-cohuck@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 18 Dec 2017 16:21:34 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Christian Borntraeger Suspend/Resume to/from disk currently fails. Let us wire up the necessary callbacks. This is mostly just forwarding the requests to the virtio drivers. The only thing that has to be done in virtio_ccw itself is to re-set the virtio revision. Suggested-by: Thomas Huth Signed-off-by: Christian Borntraeger Message-Id: <20171207141102.70190-2-borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand [CH: merged <20171218083706.223836-1-borntraeger@de.ibm.com> to fix !CONFIG_PM configs] Signed-off-by: Cornelia Huck --- drivers/s390/virtio/virtio_ccw.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index b18fe2014cf2..985184ebda45 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -1300,6 +1300,9 @@ static int virtio_ccw_cio_notify(struct ccw_device *cdev, int event) vcdev->device_lost = true; rc = NOTIFY_DONE; break; + case CIO_OPER: + rc = NOTIFY_OK; + break; default: rc = NOTIFY_DONE; break; @@ -1312,6 +1315,27 @@ static struct ccw_device_id virtio_ids[] = { {}, }; +#ifdef CONFIG_PM_SLEEP +static int virtio_ccw_freeze(struct ccw_device *cdev) +{ + struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev); + + return virtio_device_freeze(&vcdev->vdev); +} + +static int virtio_ccw_restore(struct ccw_device *cdev) +{ + struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev); + int ret; + + ret = virtio_ccw_set_transport_rev(vcdev); + if (ret) + return ret; + + return virtio_device_restore(&vcdev->vdev); +} +#endif + static struct ccw_driver virtio_ccw_driver = { .driver = { .owner = THIS_MODULE, @@ -1324,6 +1348,11 @@ static struct ccw_driver virtio_ccw_driver = { .set_online = virtio_ccw_online, .notify = virtio_ccw_cio_notify, .int_class = IRQIO_VIR, +#ifdef CONFIG_PM_SLEEP + .freeze = virtio_ccw_freeze, + .thaw = virtio_ccw_restore, + .restore = virtio_ccw_restore, +#endif }; static int __init pure_hex(char **cp, unsigned int *val, int min_digit,