From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C20E2ECAAA1 for ; Tue, 30 Aug 2022 17:31:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231905AbiH3RbT (ORCPT ); Tue, 30 Aug 2022 13:31:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231864AbiH3Raf (ORCPT ); Tue, 30 Aug 2022 13:30:35 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6E02C32FB; Tue, 30 Aug 2022 10:27:19 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0A764617CA; Tue, 30 Aug 2022 17:25:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A05ABC43470; Tue, 30 Aug 2022 17:25:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1661880355; bh=AMvkWcumkyw9/k0EQQQuY6LBmsfboRqftOvewoCknF0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G7CDzrzPXB37ExIjDEKtF+MQUGyfZB32u8kEwqvW2tFxin/Keck9MoziJf+E7x9dF 4E3AWFUxC9a/eO5Kl9ClerXEsievVe8jXmMQ+CZh2hydyz/raAZu37yX/4iQtMb3zO JTAksAGdmNQBQnkxVC9+c6wFU2IsphBz17Pfc2jseNnFc0buAA4f6KWyzONg1/krgt yecCpqAuwvnzBnz1sA2q7MzLLVOdM4GyOBht+uAlsyt/Cbp9HLqztGzBIffIRHMfxY pUr0ds6i5BvwIqIGooTM/54wNOGYHQNAwY3PKbQu1pfvLF5v9pYPR/VSDC8okA6+D6 yuWF/0EH77yIA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Li Qiong , Helge Deller , Sasha Levin , James.Bottomley@HansenPartnership.com, linux-parisc@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 04/10] parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources() Date: Tue, 30 Aug 2022 13:25:35 -0400 Message-Id: <20220830172541.581820-4-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220830172541.581820-1-sashal@kernel.org> References: <20220830172541.581820-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Li Qiong [ Upstream commit d46c742f827fa2326ab1f4faa1cccadb56912341 ] As the possible failure of the kmalloc(), it should be better to fix this error path, check and return '-ENOMEM' error code. Signed-off-by: Li Qiong Signed-off-by: Helge Deller Signed-off-by: Sasha Levin --- drivers/parisc/ccio-dma.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index 6efab7a06c5fc..73ee74d6e7a3d 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -1390,15 +1390,17 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr) } } -static void __init ccio_init_resources(struct ioc *ioc) +static int __init ccio_init_resources(struct ioc *ioc) { struct resource *res = ioc->mmio_region; char *name = kmalloc(14, GFP_KERNEL); - + if (unlikely(!name)) + return -ENOMEM; snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path); ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low); ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv); + return 0; } static int new_ioc_area(struct resource *res, unsigned long size, @@ -1552,7 +1554,10 @@ static int __init ccio_probe(struct parisc_device *dev) return -ENOMEM; } ccio_ioc_init(ioc); - ccio_init_resources(ioc); + if (ccio_init_resources(ioc)) { + kfree(ioc); + return -ENOMEM; + } hppa_dma_ops = &ccio_ops; dev->dev.platform_data = kzalloc(sizeof(struct pci_hba_data), GFP_KERNEL); -- 2.35.1