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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 665B9C433F5 for ; Wed, 23 Feb 2022 21:52:42 +0000 (UTC) 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:In-Reply-To:MIME-Version:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Owner; bh=drKUB2cPSeuhy0c0TiiQddhv6pwzgsuRmPd9xxeiDVI=; b=yOjbdhU28+hkRx B+5LEwXwNSm5ou0c69LjMglmbCbcEO2G4PcVIeGH6K8Enbgh+ltyque38V74ztpglb6lLS8TA2VcG yJhTHBNTxj0VIbpIfVhBlEs9dDs1xktz7W3RJw8xRVZ9WOPI4NBhSNe1HWeFycwHxo0uIVl1oBVu8 XnCVEVuv03F+NWZ7D4LctSi+2qfyzTXs+UU4FgoiIvGBwTCTZJFTtaIBT3RtqKEK8p1NqgiDWPPd2 q/V0a96Sdw8nOq1gKPpaP/tZkcZ5UP37wswlaGDsMLuAIHec0YhklT+ETcYsrbhc6G2YBqEXyK+Tj CQH36yvMyRO5UO1eqmgA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMzXg-00G8QH-0D; Wed, 23 Feb 2022 21:51:24 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMzXb-00G8Pb-Od for linux-arm-kernel@lists.infradead.org; Wed, 23 Feb 2022 21:51:21 +0000 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 ams.source.kernel.org (Postfix) with ESMTPS id 539DEB81F56; Wed, 23 Feb 2022 21:51:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE649C340E7; Wed, 23 Feb 2022 21:51:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645653077; bh=EOsLY0xS49T9DSDZaspJWFLqMIPottB/vHuCZHn9gRc=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=ahhwtyxMEpCMobEOsqsInnTB54HNvEQ6GtBmi9Pbads3CBGXv3HugVhnSog9F8o/e ivV0EdPE2BUK6TnJhBe3j+4lVCC9rXDQnkWsSLE39We5LPQwqxPigAexZ79Cnl3s4B rNHqXxjoVaHLCkU5BuV7KvHty99EiDdh+MAzrJt5TYIBMGr8EWMQY7h5KZZAO+881E 5r9UAiifkq5EzBV8uygdBejuW3dyuB89wAaBBP3+AJgQ/rXohe9dKeUnXP0zdTaFkk lfm1EHCugtgIzsLPpr5/CugEAZ9J1veD7nNl57sP6l07KQOXA5tmaKZkJScpcbJRHQ wWzvXTETPgAfQ== Date: Wed, 23 Feb 2022 15:51:15 -0600 From: Bjorn Helgaas To: Krzysztof Kozlowski Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Stuart Yoder , Laurentiu Tudor , Abel Vesa , Shawn Guo , Sascha Hauer , Fabio Estevam , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , Srinivas Kandagatla , Mark Brown , "Michael S. Tsirkin" , Jason Wang , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds , Rasmus Villemoes Subject: Re: [PATCH v2 05/11] pci: use helper for safer setting of driver_override Message-ID: <20220223215115.GA155125@bhelgaas> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220223191310.347669-6-krzysztof.kozlowski@canonical.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220223_135120_108976_F4EC1862 X-CRM114-Status: GOOD ( 22.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In subject, to match drivers/pci/ convention, do something like: PCI: Use driver_set_override() instead of open-coding On Wed, Feb 23, 2022 at 08:13:04PM +0100, Krzysztof Kozlowski wrote: > Use a helper for seting driver_override to reduce amount of duplicated > code. s/seting/setting/ > Signed-off-by: Krzysztof Kozlowski > --- > drivers/pci/pci-sysfs.c | 24 ++++-------------------- > 1 file changed, 4 insertions(+), 20 deletions(-) > > diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c > index 602f0fb0b007..16a163d4623e 100644 > --- a/drivers/pci/pci-sysfs.c > +++ b/drivers/pci/pci-sysfs.c > @@ -567,31 +567,15 @@ static ssize_t driver_override_store(struct device *dev, > const char *buf, size_t count) > { > struct pci_dev *pdev = to_pci_dev(dev); > - char *driver_override, *old, *cp; > + int ret; > > /* We need to keep extra room for a newline */ > if (count >= (PAGE_SIZE - 1)) > return -EINVAL; This check makes no sense in the new function. Michael alluded to this as well. > - driver_override = kstrndup(buf, count, GFP_KERNEL); > - if (!driver_override) > - return -ENOMEM; > - > - cp = strchr(driver_override, '\n'); > - if (cp) > - *cp = '\0'; > - > - device_lock(dev); > - old = pdev->driver_override; > - if (strlen(driver_override)) { > - pdev->driver_override = driver_override; > - } else { > - kfree(driver_override); > - pdev->driver_override = NULL; > - } > - device_unlock(dev); > - > - kfree(old); > + ret = driver_set_override(dev, &pdev->driver_override, buf); > + if (ret) > + return ret; > > return count; > } > -- > 2.32.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel