From patchwork Wed Nov 14 21:42:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Colin King X-Patchwork-Id: 10683139 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CE1A714D6 for ; Wed, 14 Nov 2018 21:42:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C08772C04A for ; Wed, 14 Nov 2018 21:42:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BED4E2C087; Wed, 14 Nov 2018 21:42:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 56F002C052 for ; Wed, 14 Nov 2018 21:42:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726579AbeKOHrs (ORCPT ); Thu, 15 Nov 2018 02:47:48 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:52274 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725756AbeKOHrs (ORCPT ); Thu, 15 Nov 2018 02:47:48 -0500 Received: from 1.general.cking.uk.vpn ([10.172.193.212] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1gN2vv-0002uo-Ah; Wed, 14 Nov 2018 21:42:47 +0000 From: Colin King To: Avi Fishman , Tomer Maimon , Patrick Venture , Nancy Yuen , Brendan Higgins , Mark Brown , openbmc@lists.ozlabs.org, linux-spi@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH][next] spi: npcm: fix u32 csgpio being checked for less than zero Date: Wed, 14 Nov 2018 21:42:46 +0000 Message-Id: <20181114214246.15591-1-colin.king@canonical.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Colin Ian King The u32 variable csgpio is being checked for an error return from the call to of_get_named_gpio, however, since this is unsigned this comparison will always be false. Fix this by making csgpio an int and fix up the %u format specifiers to %d accordingly. Detected by CoverityScan, CID#1475476 ("Unsigned compared against 0") Fixes: 2a22f1b30cee ("spi: npcm: add NPCM PSPI controller driver") Signed-off-by: Colin Ian King --- drivers/spi/spi-npcm-pspi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-npcm-pspi.c b/drivers/spi/spi-npcm-pspi.c index 51777515c83f..6dae91091143 100644 --- a/drivers/spi/spi-npcm-pspi.c +++ b/drivers/spi/spi-npcm-pspi.c @@ -329,7 +329,7 @@ static int npcm_pspi_probe(struct platform_device *pdev) unsigned long clk_hz; struct device_node *np = pdev->dev.of_node; int num_cs, i; - u32 csgpio; + int csgpio; int irq; int ret; @@ -417,12 +417,12 @@ static int npcm_pspi_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to get csgpio#%u\n", i); goto out_disable_clk; } - dev_dbg(&pdev->dev, "csgpio#%u = %u\n", i, csgpio); + dev_dbg(&pdev->dev, "csgpio#%u = %d\n", i, csgpio); ret = devm_gpio_request_one(&pdev->dev, csgpio, GPIOF_OUT_INIT_HIGH, DRIVER_NAME); if (ret < 0) { dev_err(&pdev->dev, - "failed to configure csgpio#%u %u\n" + "failed to configure csgpio#%u %d\n" , i, csgpio); goto out_disable_clk; }