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[188.155.201.27]) by smtp.gmail.com with ESMTPSA id l28-20020a05600c1d1c00b0038e72a95ec4sm593851wms.13.2022.04.03.11.38.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Apr 2022 11:38:21 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Stuart Yoder , "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 , 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 , Andy Shevchenko , Krzysztof Kozlowski Subject: [PATCH v6 05/12] PCI: Use driver_set_override() instead of open-coding Date: Sun, 3 Apr 2022 20:37:51 +0200 Message-Id: <20220403183758.192236-6-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220403183758.192236-1-krzysztof.kozlowski@linaro.org> References: <20220403183758.192236-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Use a helper to set driver_override to the reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski Acked-by: Bjorn Helgaas Reviewed-by: Andy Shevchenko --- drivers/pci/pci-sysfs.c | 28 ++++------------------------ include/linux/pci.h | 6 +++++- 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c263ffc5884a..fc804e08e3cb 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -567,31 +567,11 @@ 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; - - /* We need to keep extra room for a newline */ - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - 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); + int ret; - kfree(old); + ret = driver_set_override(dev, &pdev->driver_override, buf, count); + if (ret) + return ret; return count; } diff --git a/include/linux/pci.h b/include/linux/pci.h index 60adf42460ab..844d38f589cf 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -516,7 +516,11 @@ struct pci_dev { u16 acs_cap; /* ACS Capability offset */ phys_addr_t rom; /* Physical address if not from BAR */ size_t romlen; /* Length if not from BAR */ - char *driver_override; /* Driver name to force a match */ + /* + * Driver name to force a match. Do not set directly, because core + * frees it. Use driver_set_override() to set or clear it. + */ + const char *driver_override; unsigned long priv_flags; /* Private flags for the PCI driver */ -- 2.32.0 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 E152DC433F5 for ; Sun, 3 Apr 2022 18:40:24 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Mfa2Xmwc5O9D1yzeNr9IVr5Rm5uSvI0/nrdHSEKfBlQ=; b=PspvCtou0TD4Zn K/PW8pVl37MYcap0DFeaoTbXx/FDBVGl/ON4SRrvm2hbXchcnDtU1FMye7THr1jL2ECPibNuQqynL REMkG0918pg5vvyvIMAWTDdHgo/nGlzBNdUCcWajsQvacpMdNBWlmUmGFeJSSM04HqXoP2RpKyo4/ lYSIrKXrp5GDGqjIM78pEDQgQVQ655EiHYh5C9CwP6mV27L5TMghI0rgxg2s2+wxSQL6ldNfqYKnG qyMLEjjhdygCCSHeZPdEkglkRbvt2itmWEBVkJReaile4htoUHZL4Su8mRikUmtHM+EIkGyKPAsFw IRlO7K4+g/bSU24V++2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nb589-00C8JR-9U; Sun, 03 Apr 2022 18:39:17 +0000 Received: from mail-wr1-x435.google.com ([2a00:1450:4864:20::435]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nb57I-00C7rU-KP for linux-arm-kernel@lists.infradead.org; Sun, 03 Apr 2022 18:38:26 +0000 Received: by mail-wr1-x435.google.com with SMTP id d3so596936wrb.7 for ; Sun, 03 Apr 2022 11:38:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mHITSW/sgmw/Csyhuirx5ijnYnrGvi4Rk0KXIhii9OU=; b=wXR8rp03DHc5wiUfBVAB5Nuh3XfnaYvUKqmtsWXgN+spI327pZeGN4sfFkdlAQO76M 2Cq4PgoxUbVzR/c9uRlXxz3+QdKUn/21Wzs/zg2COGsRcw1TRvCt0E5f9P+PkVHqjkIF 5Z76p+imRzuTlBLLDQ4l3jK+NlPnSdBryKK85hZDKBO3WnYbq5zwPHKx5DfZjuhQ9frO S3PY5QFr5UDBVY0KyfpgE5rFn2xr2i2goIgkSwFjKbQy5Q6+DDtCUKaI752vs/DB6ull LkXlxwq1hvPpFZCtBRdrxC90gtIPXgjfEPN4yaWbYrGQdjQBBZpMFI1q0uaCqYVzm0pN yxng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mHITSW/sgmw/Csyhuirx5ijnYnrGvi4Rk0KXIhii9OU=; b=neJV3UPlUCcZvpqT6VOjWyyuuLnjFbWa79um7xISFnUCUI1XBAUlhStT/SuxPaVJ/L K2KyxFgSvZBTuwR6f8l4XpR54sZu064DLUQXr8WNf25PdxoTZJ7zvwj6lFiLVJAIg0uX sifg3/9dhTo2SXYEHtz6ulynpL49hw9ki9lCOT4X8HTVnVoNC2cp7BlinpSisl3mR5Ct ZJ7yD2wqfysq9KtvwTxWzDVpqvEolVpShBIea9VcFQsBxmGysjt3Z0nWqjSUCAabPKTi X7JGkiNufhhi/xz9EQwr49zjxRgb803Pt2fMJsZBYCv3QVeHbt3ZS/PotiTq7T5CSLk8 +sJA== X-Gm-Message-State: AOAM530OWuQGd+kBMmtt+E6MntH/fsjgyrGd+geoPBYCnYXYWmiGjtM0 vfBnGAUMNLyg4Ie/Xzx6NO7PYw== X-Google-Smtp-Source: ABdhPJwOqH/2Zj0N+LpYA2eXErN8ibqekikwBYmO9ZTvoOA6luonqgG5M3X9CKaUCELKOTnyoNhzag== X-Received: by 2002:adf:90cf:0:b0:205:fdb4:92d1 with SMTP id i73-20020adf90cf000000b00205fdb492d1mr8369733wri.468.1649011102158; Sun, 03 Apr 2022 11:38:22 -0700 (PDT) Received: from localhost.localdomain (xdsl-188-155-201-27.adslplus.ch. [188.155.201.27]) by smtp.gmail.com with ESMTPSA id l28-20020a05600c1d1c00b0038e72a95ec4sm593851wms.13.2022.04.03.11.38.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Apr 2022 11:38:21 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Stuart Yoder , "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 , 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 , Andy Shevchenko , Krzysztof Kozlowski Subject: [PATCH v6 05/12] PCI: Use driver_set_override() instead of open-coding Date: Sun, 3 Apr 2022 20:37:51 +0200 Message-Id: <20220403183758.192236-6-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220403183758.192236-1-krzysztof.kozlowski@linaro.org> References: <20220403183758.192236-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220403_113824_713276_17A1384F X-CRM114-Status: GOOD ( 18.34 ) 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 Use a helper to set driver_override to the reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski Acked-by: Bjorn Helgaas Reviewed-by: Andy Shevchenko --- drivers/pci/pci-sysfs.c | 28 ++++------------------------ include/linux/pci.h | 6 +++++- 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c263ffc5884a..fc804e08e3cb 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -567,31 +567,11 @@ 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; - - /* We need to keep extra room for a newline */ - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - 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); + int ret; - kfree(old); + ret = driver_set_override(dev, &pdev->driver_override, buf, count); + if (ret) + return ret; return count; } diff --git a/include/linux/pci.h b/include/linux/pci.h index 60adf42460ab..844d38f589cf 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -516,7 +516,11 @@ struct pci_dev { u16 acs_cap; /* ACS Capability offset */ phys_addr_t rom; /* Physical address if not from BAR */ size_t romlen; /* Length if not from BAR */ - char *driver_override; /* Driver name to force a match */ + /* + * Driver name to force a match. Do not set directly, because core + * frees it. Use driver_set_override() to set or clear it. + */ + const char *driver_override; unsigned long priv_flags; /* Private flags for the PCI driver */ -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel