From patchwork Thu Feb 8 18:49:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Desnoyers X-Patchwork-Id: 13550365 Received: from smtpout.efficios.com (smtpout.efficios.com [167.114.26.122]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 982E12D05C; Thu, 8 Feb 2024 18:49:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=167.114.26.122 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707418178; cv=none; b=QGtleAqVWcg0gAbLqcPq+4T9SRccImk359ZvZML/R0Q2KBoze2CtzahaVSEDLag2bwnaeriEB8mo9lXdRZp7H8DxlDEMWLxl+ydeUdEfjjpV4mT18KxmUFuPS+3LRZ3jbHa0oySeHX6MIyxM+b12Jhaxgo9CBr2FnG6ARC33Dsg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707418178; c=relaxed/simple; bh=Iy1T66BEIuPj6bTS95Nd9D5h8aE2OAfCM3Sw4sgOgjA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=X1HpXTUmKAo2jjd9LTR5UF3bnMKZNEzQ0Dz4i6nFJGdgF5wj39sXESUmG6zL4pc5JhWr1twe6jjSCHZtO8nojMENTVmUC3e39JyYPo8+byqMMGFopxs5aARsqf4Uc5+PL4XQLz9Q8udqFqzwsQfTwc/1lUO7oDUQa/JmdTnGWSE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=efficios.com; spf=pass smtp.mailfrom=efficios.com; dkim=pass (2048-bit key) header.d=efficios.com header.i=@efficios.com header.b=vtjc7/2f; arc=none smtp.client-ip=167.114.26.122 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=efficios.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=efficios.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=efficios.com header.i=@efficios.com header.b="vtjc7/2f" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=efficios.com; s=smtpout1; t=1707418166; bh=Iy1T66BEIuPj6bTS95Nd9D5h8aE2OAfCM3Sw4sgOgjA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vtjc7/2fYgtbG9L3HmHuiZ0hGJa5dwKDXt/n16lAht+M2tw/jI1e25yKjrmZukvCz /CX1mCneF7UyCbUOI4h3G4fdzzSb+li471Gx6ba8eevnycoFnHMSk9/h7wbWMnbYvz 6nZtKBy7/E8bqAxj2lbFepGPrzFubBQ+wr2SChDD6HS2Wn+qRldp0qwKKSKFtnBJIU OLFpBjTdvJMQftoRrtnmWegJrS0zZtCdd9sUdS3eoFkCZdZGdSYOE7mkXPbWW5GCXd tkUbHVYezf/E/8BNNB/B1FE4KQJPivjjt8+FxxLo9L9C6/i/PG/zlxN+sluj3adEJD E0pl1Ko8zJjwg== Received: from thinkos.internal.efficios.com (192-222-143-198.qc.cable.ebox.net [192.222.143.198]) by smtpout.efficios.com (Postfix) with ESMTPSA id 4TW5ck2DcczY2L; Thu, 8 Feb 2024 13:49:26 -0500 (EST) From: Mathieu Desnoyers To: Dan Williams , Arnd Bergmann , Dave Chinner Cc: linux-kernel@vger.kernel.org, Mathieu Desnoyers , Andrew Morton , Linus Torvalds , Vishal Verma , Dave Jiang , Matthew Wilcox , Russell King , linux-arch@vger.kernel.org, linux-cxl@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, dm-devel@lists.linux.dev, nvdimm@lists.linux.dev, linux-s390@vger.kernel.org, Alasdair Kergon , Mike Snitzer , Mikulas Patocka Subject: [PATCH v4 09/12] nvdimm/pmem: Cleanup alloc_dax() error handling Date: Thu, 8 Feb 2024 13:49:10 -0500 Message-Id: <20240208184913.484340-10-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240208184913.484340-1-mathieu.desnoyers@efficios.com> References: <20240208184913.484340-1-mathieu.desnoyers@efficios.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Now that alloc_dax() returns ERR_PTR(-EOPNOTSUPP) rather than NULL, the callers do not have to handle NULL return values anymore. Signed-off-by: Mathieu Desnoyers Cc: Alasdair Kergon Cc: Mike Snitzer Cc: Mikulas Patocka Cc: Andrew Morton Cc: Linus Torvalds Cc: Dan Williams Cc: Vishal Verma Cc: Dave Jiang Cc: Matthew Wilcox Cc: Arnd Bergmann Cc: Russell King Cc: linux-arch@vger.kernel.org Cc: linux-cxl@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-xfs@vger.kernel.org Cc: dm-devel@lists.linux.dev Cc: nvdimm@lists.linux.dev --- drivers/nvdimm/pmem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index f1d9f5c6dbac..e9898457a7bd 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -558,8 +558,8 @@ static int pmem_attach_disk(struct device *dev, disk->bb = &pmem->bb; dax_dev = alloc_dax(pmem, &pmem_dax_ops); - if (IS_ERR_OR_NULL(dax_dev)) { - rc = IS_ERR(dax_dev) ? PTR_ERR(dax_dev) : -EOPNOTSUPP; + if (IS_ERR(dax_dev)) { + rc = PTR_ERR(dax_dev); if (rc != -EOPNOTSUPP) goto out; } else {