From patchwork Sat Jul 14 13:30:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 943945 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="VTR6Fhhz"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41SVtD5qNtz9s1R for ; Sat, 14 Jul 2018 23:30:44 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=BECoex08ucNoQy9Dcs0xfvsdePVdvu65G69dPs3trPo=; b=VTR 6Fhhz3Eduj7m/PMeOiRoCV6x+hZrjWvGxA5jrhsLeWpXWUpkLGvnz9v/TMXXV/nev6UllCQeL9gr9 MP41b0Y6XjEYWUfyOEaLaELKhkOjEn0Sh6+dGs6nWhpM3GV/+P+ZdbzwuxmfB7kI8Y6+VOei3+fd7 y8UAa2GOCn5JF2bYYxOzo+5IWOq8YeCjqO5FLFAHIcdGoePLe6doEDuu+VcmTMxSMKlq/9+dEoHV/ kjGcDj2Vm4+dTBpHtbElqSgmtjO06wzKfX94Y+gW2WpiWy5dS/+HwrXDdagBLAG30kbxXEJiaBVHi OeTVdXrpcGttSVyM6ImArslL1AQ7/Qw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1feKdB-0007Dg-VY; Sat, 14 Jul 2018 13:30:37 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1feKd1-000747-H0 for linux-mtd@lists.infradead.org; Sat, 14 Jul 2018 13:30:29 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id A0B7F20876; Sat, 14 Jul 2018 15:30:15 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.bootlin.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (unknown [91.224.148.103]) by mail.bootlin.com (Postfix) with ESMTPSA id 1A19C20714; Sat, 14 Jul 2018 15:30:05 +0200 (CEST) From: Miquel Raynal To: Boris Brezillon , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut Subject: [PATCH 1/4] mtd: rawnand: add missing error handling in subop helpers Date: Sat, 14 Jul 2018 15:30:00 +0200 Message-Id: <20180714133003.25187-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.14.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180714_063027_704304_FE1555FF X-CRM114-Status: GOOD ( 10.07 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.4.15.54 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mtd@lists.infradead.org, stable@vger.kernel.org, Miquel Raynal MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org A report from Colin Ian King pointed a CoverityScan issue where error values on these helpers where not checked in the drivers. These helpers could error out only in case of a software bug in driver code, not because of a runtime/hardware error but in any cases it is safer to handle these errors properly. Before fixing the drivers, let's add some consistency and fix these helpers error handling. Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation") Cc: stable@vger.kernel.org Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_base.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 10c4f9919850..51f68203aa63 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -2720,6 +2720,8 @@ int nand_subop_get_num_addr_cyc(const struct nand_subop *subop, return -EINVAL; start_off = nand_subop_get_addr_start_off(subop, instr_idx); + if (start_off < 0) + return start_off; if (instr_idx == subop->ninstrs - 1 && subop->last_instr_end_off) @@ -2774,6 +2776,8 @@ int nand_subop_get_data_len(const struct nand_subop *subop, return -EINVAL; start_off = nand_subop_get_data_start_off(subop, instr_idx); + if (start_off < 0) + return start_off; if (instr_idx == subop->ninstrs - 1 && subop->last_instr_end_off)