From patchwork Mon Dec 6 22:39:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12695030 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 B4249C433EF for ; Mon, 6 Dec 2021 22:45:18 +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:Date:MIME-Version:References:Subject:Cc :To:From:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=Rfk55HSWgm0Fu6XT4k7Qu38vNnIErYqUa/f7AV0K/Zg=; b=UbEofp1GRhcS99 NQI7tUULXyC7+TEmMsHeAGtp5HY59EHeHZCJCqiAuoEGhuOD3W81lCa0z2Joh/ZjRPH68fdDOR1U4 /dHZnmrX7zAZup4OwiwV3iNYSi+g0Bh86CZFWejh+kL3nACkaehVq2f3FS2PwzsGWXBtgkVwMu4oU eBEyJLImZrySaHYr+JkYua7R17RqS7ktUXy/8zJ2vgeGqR1UZChisI/OL3paNCTTniRUAcpd6zQG3 SnbPXPQKfYrEs1xxuKDzSkDGJYs6XFEIQtz187KmCsJldCoEOwekZs0VcWOJWiciht1Rp42mYgSnn l0WpGoZmpz0aAXNGXcYQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muMhv-006I22-N4; Mon, 06 Dec 2021 22:43:41 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1muMde-006FOI-2o for linux-arm-kernel@lists.infradead.org; Mon, 06 Dec 2021 22:39:16 +0000 Message-ID: <20211206210438.202985003@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1638830352; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=jCIs00AnDFN/pc+q7M02Zi/IVzmHXkQ9Es/hPheHeNQ=; b=2rP4FoL+xyNZoK6iUxAgaa7dbsHImJq276/KG1o/LUFvLA49PK6zuyNk2tHd1FnpDZe1pj WgNT217qYGl9KImId6YuDBfpl4ZBK6ckoB8TbZMLsur0kqWQXSuJhMtOlnBdevGYhX1so1 8Q7gMjsFNIwBuKizDqmmZmjndYpH/K+ytUK5m4ZxvFwCFrTtMS+R8nNq2SLXmGgvZj/pil 01qaTS3PEnGoHQJ4ewsijixErWUYRCdGTAkpCz4KtjK+mgnxe0jAde8P4/OBnU0/FCqJ1W PpUdfJU2Bnf4bbA7MBJ16iPuIUHeBltKDUmr5wy0U6SWq4ShpwsliojXtUj6Sg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1638830352; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=jCIs00AnDFN/pc+q7M02Zi/IVzmHXkQ9Es/hPheHeNQ=; b=vn0WhJVtza9YwvoVinEXZsAJsCpYbIuH3KXYlJb8+4+vUdUnnJxqCHdsQplJVhDzk/K79b +BUN5SUUBhz0gtCg== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Cedric Le Goater , xen-devel@lists.xenproject.org, Juergen Gross , Greg Kroah-Hartman , Will Deacon , Santosh Shilimkar , iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org, Stuart Yoder , Laurentiu Tudor , Nishanth Menon , Tero Kristo , linux-arm-kernel@lists.infradead.org, Vinod Koul , Mark Rutland , Robin Murphy , Sinan Kaya Subject: [patch V2 10/36] genirq/msi: Remove the original sysfs interfaces References: <20211206210307.625116253@linutronix.de> MIME-Version: 1.0 Date: Mon, 6 Dec 2021 23:39:12 +0100 (CET) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211206_143914_479439_CA67FB2D X-CRM114-Status: GOOD ( 16.31 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org No more users. Refactor the core code accordingly and move the global interface under CONFIG_PCI_MSI_ARCH_FALLBACKS. Signed-off-by: Thomas Gleixner Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jason Gunthorpe --- include/linux/msi.h | 29 +++++++--------------------- kernel/irq/msi.c | 53 +++++++++++++++++++--------------------------------- 2 files changed, 28 insertions(+), 54 deletions(-) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -246,26 +246,6 @@ void __pci_write_msi_msg(struct msi_desc void pci_msi_mask_irq(struct irq_data *data); void pci_msi_unmask_irq(struct irq_data *data); -#ifdef CONFIG_SYSFS -int msi_device_populate_sysfs(struct device *dev); -void msi_device_destroy_sysfs(struct device *dev); - -const struct attribute_group **msi_populate_sysfs(struct device *dev); -void msi_destroy_sysfs(struct device *dev, - const struct attribute_group **msi_irq_groups); -#else -static inline int msi_device_populate_sysfs(struct device *dev) { return 0; } -static inline void msi_device_destroy_sysfs(struct device *dev) { } - -static inline const struct attribute_group **msi_populate_sysfs(struct device *dev) -{ - return NULL; -} -static inline void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_irq_groups) -{ -} -#endif - /* * The arch hooks to setup up msi irqs. Default functions are implemented * as weak symbols so that they /can/ be overriden by architecture specific @@ -279,7 +259,14 @@ int arch_setup_msi_irq(struct pci_dev *d void arch_teardown_msi_irq(unsigned int irq); int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); void arch_teardown_msi_irqs(struct pci_dev *dev); -#endif +#ifdef CONFIG_SYSFS +int msi_device_populate_sysfs(struct device *dev); +void msi_device_destroy_sysfs(struct device *dev); +#else /* CONFIG_SYSFS */ +static inline int msi_device_populate_sysfs(struct device *dev) { return 0; } +static inline void msi_device_destroy_sysfs(struct device *dev) { } +#endif /* !CONFIG_SYSFS */ +#endif /* CONFIG_PCI_MSI_ARCH_FALLBACKS */ /* * The restore hook is still available even for fully irq domain based --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -131,12 +131,8 @@ static ssize_t msi_mode_show(struct devi /** * msi_populate_sysfs - Populate msi_irqs sysfs entries for devices * @dev: The device(PCI, platform etc) who will get sysfs entries - * - * Return attribute_group ** so that specific bus MSI can save it to - * somewhere during initilizing msi irqs. If devices has no MSI irq, - * return NULL; if it fails to populate sysfs, return ERR_PTR */ -const struct attribute_group **msi_populate_sysfs(struct device *dev) +static const struct attribute_group **msi_populate_sysfs(struct device *dev) { const struct attribute_group **msi_irq_groups; struct attribute **msi_attrs, *msi_attr; @@ -227,41 +223,32 @@ int msi_device_populate_sysfs(struct dev } /** - * msi_destroy_sysfs - Destroy msi_irqs sysfs entries for devices - * @dev: The device(PCI, platform etc) who will remove sysfs entries - * @msi_irq_groups: attribute_group for device msi_irqs entries - */ -void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_irq_groups) -{ - struct device_attribute *dev_attr; - struct attribute **msi_attrs; - int count = 0; - - if (msi_irq_groups) { - sysfs_remove_groups(&dev->kobj, msi_irq_groups); - msi_attrs = msi_irq_groups[0]->attrs; - while (msi_attrs[count]) { - dev_attr = container_of(msi_attrs[count], - struct device_attribute, attr); - kfree(dev_attr->attr.name); - kfree(dev_attr); - ++count; - } - kfree(msi_attrs); - kfree(msi_irq_groups[0]); - kfree(msi_irq_groups); - } -} - -/** * msi_device_destroy_sysfs - Destroy msi_irqs sysfs entries for a device * @dev: The device (PCI, platform etc) for which to remove * sysfs entries */ void msi_device_destroy_sysfs(struct device *dev) { - msi_destroy_sysfs(dev, dev->msi.data->attrs); + const struct attribute_group **msi_irq_groups = dev->msi.data->attrs; + struct device_attribute *dev_attr; + struct attribute **msi_attrs; + int count = 0; + dev->msi.data->attrs = NULL; + if (!msi_irq_groups) + return; + + sysfs_remove_groups(&dev->kobj, msi_irq_groups); + msi_attrs = msi_irq_groups[0]->attrs; + while (msi_attrs[count]) { + dev_attr = container_of(msi_attrs[count], struct device_attribute, attr); + kfree(dev_attr->attr.name); + kfree(dev_attr); + ++count; + } + kfree(msi_attrs); + kfree(msi_irq_groups[0]); + kfree(msi_irq_groups); } #endif