From patchwork Mon Aug 23 20:29:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 501679 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=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 AB8E7C4320E for ; Mon, 23 Aug 2021 20:30:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BE5760E97 for ; Mon, 23 Aug 2021 20:30:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232939AbhHWUbR (ORCPT ); Mon, 23 Aug 2021 16:31:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232627AbhHWUa7 (ORCPT ); Mon, 23 Aug 2021 16:30:59 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38582C061757; Mon, 23 Aug 2021 13:30:15 -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=FjHYiJcoMRUSOg8mXjovmoG4YYRib0Dd4tpy9VAVPrM=; b=hkHkWpB6ezJIMqnl+yvYHudFX0 KnNgmD/FTenq3X7xrHQXRsABnQKwgg/eDx7kD3RFpSZWUmTtlc+Fdufz8qgOhQQcoL15xaZ7MJieu SUBv8DGDhp/kNOBDFMAUo+LEreTcbXrt5Z9ZqoBuxshCH1XAW1HHsTCrX598/J17imHBONknSSmEJ 1WtF9exW246DnTlPbNeHGfRpLBRxHS2H7I2rF9HvM8Zs+ioSxRu3EvDTNC+U5YEDSxQbNxt9zuelk 9PGFI2bGRt8zRan8ZuxrL3qSKPrvXiKUbSvCURZRp50A59RcYQabNse/nc9hPEFYLAtESKYmx/4mu rwG28cww==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIGZa-000Zjc-Fg; Mon, 23 Aug 2021 20:29:34 +0000 From: Luis Chamberlain To: axboe@kernel.dk, martin.petersen@oracle.com, jejb@linux.ibm.com, kbusch@kernel.org, sagi@grimberg.me, adrian.hunter@intel.com, beanhuo@micron.com, ulf.hansson@linaro.org, avri.altman@wdc.com, swboyd@chromium.org, agk@redhat.com, snitzer@redhat.com, josef@toxicpanda.com Cc: hch@infradead.org, hare@suse.de, bvanassche@acm.org, ming.lei@redhat.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-mmc@vger.kernel.org, dm-devel@redhat.com, nbd@other.debian.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Luis Chamberlain , Christoph Hellwig Subject: [PATCH 10/10] nbd: add error handling support for add_disk() Date: Mon, 23 Aug 2021 13:29:30 -0700 Message-Id: <20210823202930.137278-11-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210823202930.137278-1-mcgrof@kernel.org> References: <20210823202930.137278-1-mcgrof@kernel.org> MIME-Version: 1.0 Sender: Luis Chamberlain Precedence: bulk List-ID: X-Mailing-List: linux-mmc@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. Signed-off-by: Luis Chamberlain Signed-off-by: Christoph Hellwig Reviewed-by: Christoph Hellwig --- drivers/block/nbd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index c38317979f74..95f84c9b31f2 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -1730,10 +1730,14 @@ static int nbd_dev_add(int index) disk->fops = &nbd_fops; disk->private_data = nbd; sprintf(disk->disk_name, "nbd%d", index); - add_disk(disk); + err = add_disk(disk); + if (err) + goto out_err_disk; nbd_total_devices++; return index; +out_err_disk: + blk_cleanup_disk(disk); out_free_idr: idr_remove(&nbd_index_idr, index); out_free_tags: