From patchwork Wed Nov 3 12:21:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 1550232 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=2dco9m0k; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4HkmBY6Vf4z9sRN for ; Wed, 3 Nov 2021 23:23:01 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=eD1seY7ts3Ax8lNwe8YTNKO9qCjT3ZJv3AG51hbLKSc=; b=2dco9m0kIE64QL BRjiEta5hUMeNrLXtFDr78oDh4U3qp8TZKPbXFgTITKcJO8+yLdEPz66MlvkCwEii14aglFii9bFj x+8Hj2vMPaKZ0T094ZMSGliuipu3xSTbj7/GQorvwOvSwIrljNYprzyqFMHd2Ok1VuwAxlZ6ltROQ l1o90m/WWuy7oG3xISLOyoaew2tc4itV7ET02wU+cqE+ZsLRwEiFi2cCKGcl7Ockmyt+GT3TC5iuW tIhqOdBvMbzf6XUoEw1xWcurvEt5Snwts1Ej93w5V1RDzwRz39q6VuOI35Aa6e5ysPsQ8NID41pNQ fWiGCHe0s9O+3tqf5wMA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1miFHf-0056Zf-UG; Wed, 03 Nov 2021 12:22:27 +0000 Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1miFHC-0056IM-Bq; Wed, 03 Nov 2021 12:21:58 +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 v2 07/13] nvdimm/pmem: use add_disk() error handling Date: Wed, 3 Nov 2021 05:21:51 -0700 Message-Id: <20211103122157.1215783-8-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211103122157.1215783-1-mcgrof@kernel.org> References: <20211103122157.1215783-1-mcgrof@kernel.org> MIME-Version: 1.0 X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Now that device_add_disk() supports returning an error, use that. We must unwind alloc_dax() on error. Signed-off-by: Luis Chamberlain Reviewed-by: Christoph Hellwig --- drivers/nvdimm/pmem.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index d98af6c31f42..fe7ece1534e1 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -505,7 +505,9 @@ static int pmem_attach_disk(struct device *dev, dax_write_cache(dax_dev, nvdimm_has_cache(nd_region)); pmem->dax_dev = dax_dev; - device_add_disk(dev, disk, pmem_attribute_groups); + rc = device_add_disk(dev, disk, pmem_attribute_groups); + if (rc) + goto out_cleanup_dax; if (devm_add_action_or_reset(dev, pmem_release_disk, pmem)) return -ENOMEM; @@ -516,6 +518,10 @@ static int pmem_attach_disk(struct device *dev, if (!pmem->bb_state) dev_warn(dev, "'badblocks' notification disabled\n"); return 0; + +out_cleanup_dax: + kill_dax(pmem->dax_dev); + put_dax(pmem->dax_dev); out: blk_cleanup_disk(pmem->disk); return rc;