From patchwork Wed Nov 3 23:04:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 12601815 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA02AC433F5 for ; Wed, 3 Nov 2021 23:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A8741604DC for ; Wed, 3 Nov 2021 23:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230363AbhKCXHa (ORCPT ); Wed, 3 Nov 2021 19:07:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230237AbhKCXH2 (ORCPT ); Wed, 3 Nov 2021 19:07:28 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B48F1C061714; Wed, 3 Nov 2021 16:04:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=bSdQkdtzeMIsv/fiegTTyrgOoGG2IbE1031f9dG1m7k=; b=SOMEVrTyVfZBBL9EopTS4zMZEQ M7N4DqJjNNjkJKn2kClSOYCU1q5RxhTrJdi0zV+36Tf29klTtn6mzy3LHIu83kiogodhSo9zQ/5jp 23h0hji/c6S9kRD950LhKEGB3yX87lFGdsit4J0PldpJYfJKidjB3S+EW+h2M10Fll2pvqqD+hf5G ZAGeL8KrHU4MuRD7Gt71ZfrwSl11ewfdWkQoHBxgMYgKsgbUj1A2apPIUlYwSnJ+0NSjfDpG4HRJd FXAfh8uEofnple1tcwfI1G+yG5Ki9pKGfQ3f7kB4Fjcd0nu4ma+taNS4to0gZPg2QzbjtqsiBJYaX tGCVkabg==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1miPJ8-006seX-Mg; Wed, 03 Nov 2021 23:04:38 +0000 From: Luis Chamberlain To: axboe@kernel.dk, hch@lst.de, penguin-kernel@i-love.sakura.ne.jp, dan.j.williams@intel.com, vishal.l.verma@intel.com, dave.jiang@intel.com, ira.weiny@intel.com, richard@nod.at, miquel.raynal@bootlin.com, vigneshr@ti.com, efremov@linux.com, song@kernel.org, martin.petersen@oracle.com, hare@suse.de, jack@suse.cz, ming.lei@redhat.com, tj@kernel.org, mcgrof@kernel.org Cc: linux-mtd@lists.infradead.org, linux-scsi@vger.kernel.org, linux-raid@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 07/14] z2ram: add error handling support for add_disk() Date: Wed, 3 Nov 2021 16:04:30 -0700 Message-Id: <20211103230437.1639990-8-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211103230437.1639990-1-mcgrof@kernel.org> References: <20211103230437.1639990-1-mcgrof@kernel.org> MIME-Version: 1.0 Sender: Luis Chamberlain Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. Only the disk is cleaned up inside z2ram_register_disk() as the caller deals with the rest. Reviewed-by: Christoph Hellwig Signed-off-by: Luis Chamberlain --- drivers/block/z2ram.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index 4eef218108c6..ccc52c935faf 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -318,6 +318,7 @@ static const struct blk_mq_ops z2_mq_ops = { static int z2ram_register_disk(int minor) { struct gendisk *disk; + int err; disk = blk_mq_alloc_disk(&tag_set, NULL); if (IS_ERR(disk)) @@ -333,8 +334,10 @@ static int z2ram_register_disk(int minor) sprintf(disk->disk_name, "z2ram"); z2ram_gendisk[minor] = disk; - add_disk(disk); - return 0; + err = add_disk(disk); + if (err) + blk_cleanup_disk(disk); + return err; } static int __init z2_init(void)