From patchwork Mon Sep 27 21:59:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 12520911 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 EAEE6C433EF for ; Mon, 27 Sep 2021 22:00:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D241A610A2 for ; Mon, 27 Sep 2021 22:00:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237620AbhI0WCP (ORCPT ); Mon, 27 Sep 2021 18:02:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237404AbhI0WCJ (ORCPT ); Mon, 27 Sep 2021 18:02:09 -0400 Received: from bombadil.infradead.org (unknown [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4554C06176C; Mon, 27 Sep 2021 15:00:30 -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=GSnwJGqE24fGphaFobcSY6Y9xf4YP0gJ4SZNHqUVKO0=; b=rrId4nxVmKTX2ZVroe7YTkZBoU M0GYACDk+yZdRa8ni89+7dCtMej5oBN3DKfmxRhXECVLY7YcTqa8tLBakNUoX0yvO/P/O9frTwHJY iJ+IVfvyf+uyZv2Q5gLSp43KDW1ZYQ3v2X/nWPujtpiNFKiF8E+SryBriKzQwift1AGwxU7Q2xPBD fTFO8OTA9RQBE/xJyfn+uyEuiGp3KLt2RQ0eUQ/MUj8gY6GJwwm+67luU25bpLuF8+XiKMPfOgqdt yulArpkEM8PTYtdWqgYQzL9AzTSujLL4xofUnpktsNAA0v0TkX2auYGy1JCFLcEJpnlBWdMWqyCfg jDhINijQ==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mUyfM-004SUx-Sp; Mon, 27 Sep 2021 22:00:04 +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 v4 2/6] scsi/sr: add error handling support for add_disk() Date: Mon, 27 Sep 2021 14:59:54 -0700 Message-Id: <20210927215958.1062466-3-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210927215958.1062466-1-mcgrof@kernel.org> References: <20210927215958.1062466-1-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. Just put the cdrom kref and have the unwinding be done by sr_kref_release(). Reviewed-by: Christoph Hellwig Signed-off-by: Luis Chamberlain --- drivers/scsi/sr.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 8b17b35283aa..d769057b25a0 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -727,7 +727,12 @@ static int sr_probe(struct device *dev) dev_set_drvdata(dev, cd); disk->flags |= GENHD_FL_REMOVABLE; sr_revalidate_disk(cd); - device_add_disk(&sdev->sdev_gendev, disk, NULL); + + error = device_add_disk(&sdev->sdev_gendev, disk, NULL); + if (error) { + kref_put(&cd->kref, sr_kref_release); + goto fail; + } sdev_printk(KERN_DEBUG, sdev, "Attached scsi CD-ROM %s\n", cd->cdi.name);