From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F922C43381 for ; Mon, 25 Mar 2019 11:50:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 17A5B20850 for ; Mon, 25 Mar 2019 11:50:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731013AbfCYLux (ORCPT ); Mon, 25 Mar 2019 07:50:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47070 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730789AbfCYLux (ORCPT ); Mon, 25 Mar 2019 07:50:53 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 462DE30018F4; Mon, 25 Mar 2019 11:50:53 +0000 (UTC) Received: from maximlenovopc.usersys.redhat.com (unknown [10.35.206.72]) by smtp.corp.redhat.com (Postfix) with ESMTP id B52C06EA3F; Mon, 25 Mar 2019 11:50:49 +0000 (UTC) Message-ID: <6522eaf89e86534167d3b91046f7aaab16fb38a8.camel@redhat.com> Subject: Re: [PATCH 3/8] vfio/mdev: Removed unused kref From: Maxim Levitsky To: Parav Pandit , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kwankhede@nvidia.com, alex.williamson@redhat.com Date: Mon, 25 Mar 2019 13:50:48 +0200 In-Reply-To: <1553296835-37522-4-git-send-email-parav@mellanox.com> References: <1553296835-37522-1-git-send-email-parav@mellanox.com> <1553296835-37522-4-git-send-email-parav@mellanox.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Mon, 25 Mar 2019 11:50:53 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2019-03-22 at 18:20 -0500, Parav Pandit wrote: > Remove unused kref from the mdev_device structure. > > Fixes: 7b96953bc640 ("vfio: Mediated device Core driver") > Signed-off-by: Parav Pandit > --- > drivers/vfio/mdev/mdev_core.c | 1 - > drivers/vfio/mdev/mdev_private.h | 1 - > 2 files changed, 2 deletions(-) > > diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c > index 4f213e4d..3d91f62 100644 > --- a/drivers/vfio/mdev/mdev_core.c > +++ b/drivers/vfio/mdev/mdev_core.c > @@ -311,7 +311,6 @@ int mdev_device_create(struct kobject *kobj, struct device > *dev, uuid_le uuid) > mutex_unlock(&mdev_list_lock); > > mdev->parent = parent; > - kref_init(&mdev->ref); > > mdev->dev.parent = dev; > mdev->dev.bus = &mdev_bus_type; > diff --git a/drivers/vfio/mdev/mdev_private.h > b/drivers/vfio/mdev/mdev_private.h > index b5819b7..84b2b6c 100644 > --- a/drivers/vfio/mdev/mdev_private.h > +++ b/drivers/vfio/mdev/mdev_private.h > @@ -30,7 +30,6 @@ struct mdev_device { > struct mdev_parent *parent; > uuid_le uuid; > void *driver_data; > - struct kref ref; > struct list_head next; > struct kobject *type_kobj; > bool active; When develping my nvme-mdev driver, I'll seen that unused kref too. Dead code has to go. Reviewed-by: Maxim Levitsky Best regards, Maxim Levitsky