From patchwork Mon Dec 6 22:39:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12660159 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 51FDCC433FE for ; Mon, 6 Dec 2021 22:47:20 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.240015.416130 (Exim 4.92) (envelope-from ) id 1muMl7-0002Vk-8K; Mon, 06 Dec 2021 22:46:57 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 240015.416130; Mon, 06 Dec 2021 22:46:57 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1muMl7-0002Vd-4O; Mon, 06 Dec 2021 22:46:57 +0000 Received: by outflank-mailman (input) for mailman id 240015; Mon, 06 Dec 2021 22:46:55 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1muMdb-0004dp-3K for xen-devel@lists.xenproject.org; Mon, 06 Dec 2021 22:39:11 +0000 Received: from galois.linutronix.de (galois.linutronix.de [193.142.43.55]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 53ee1db7-56e5-11ec-a5e1-b9374ead2679; Mon, 06 Dec 2021 23:39:09 +0100 (CET) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 53ee1db7-56e5-11ec-a5e1-b9374ead2679 Message-ID: <20211206210438.091930107@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1638830349; 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=n4LO8stu5mGmwD6jOLFnf2l6OMPt5RNuOGZfmjkddmQ=; b=rjIxyN8QC2vhOXoTwRPxWIt7XOHd2pV0YIUa3ZKXyy1j8+wg7w2g/XTz0zmH2uz4PtMgwm eCuc5ZkFTVuHEUtxljG6Mtx8djpjDWQBR6ZABksN/jDGBPfaitWUY7RV1Ik1BWVPVePWSO 82sIPeEbwY4zOLlKmNOyo8+AafHaf9XQEuz8ezNbeFbIp0Yq5mV/qMKHKce9Nm/zjTN8CX 9kdG08nwWQBYYekVlZcVZG8Y2RVLUYCa+T3kWdZ4MfKQrjFc7x2dULMyBAkEEYpjYoW0Ih FfaJqqxuFsVbVZhNxGhrQehlWuNAEG+wx7cJ2uo/yeV87VUb3o+GbwBbLatfrQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1638830349; 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=n4LO8stu5mGmwD6jOLFnf2l6OMPt5RNuOGZfmjkddmQ=; b=gby6WXMDPaO+J7o/hfTSRCCEJ6lb9LZRxZLQqYPdbxxo8839/QokO3BHWvmD0YNS+w6173 XQA1G6Lz0DyhgZCw== 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 08/36] PCI/MSI: Let the irq code handle sysfs groups References: <20211206210307.625116253@linutronix.de> MIME-Version: 1.0 Date: Mon, 6 Dec 2021 23:39:09 +0100 (CET) Set the domain info flag which makes the core code handle sysfs groups and put an explicit invocation into the legacy code. Signed-off-by: Thomas Gleixner Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jason Gunthorpe Acked-by: Bjorn Helgaas --- drivers/pci/msi/irqdomain.c | 2 +- drivers/pci/msi/legacy.c | 6 +++++- drivers/pci/msi/msi.c | 23 ----------------------- include/linux/pci.h | 1 - 4 files changed, 6 insertions(+), 26 deletions(-) --- a/drivers/pci/msi/irqdomain.c +++ b/drivers/pci/msi/irqdomain.c @@ -159,7 +159,7 @@ struct irq_domain *pci_msi_create_irq_do if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS) pci_msi_domain_update_chip_ops(info); - info->flags |= MSI_FLAG_ACTIVATE_EARLY; + info->flags |= MSI_FLAG_ACTIVATE_EARLY | MSI_FLAG_DEV_SYSFS; if (IS_ENABLED(CONFIG_GENERIC_IRQ_RESERVATION_MODE)) info->flags |= MSI_FLAG_MUST_REACTIVATE; --- a/drivers/pci/msi/legacy.c +++ b/drivers/pci/msi/legacy.c @@ -70,10 +70,14 @@ int pci_msi_legacy_setup_msi_irqs(struct { int ret = arch_setup_msi_irqs(dev, nvec, type); - return pci_msi_setup_check_result(dev, type, ret); + ret = pci_msi_setup_check_result(dev, type, ret); + if (!ret) + ret = msi_device_populate_sysfs(&dev->dev); + return ret; } void pci_msi_legacy_teardown_msi_irqs(struct pci_dev *dev) { + msi_device_destroy_sysfs(&dev->dev); arch_teardown_msi_irqs(dev); } --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -233,11 +233,6 @@ static void free_msi_irqs(struct pci_dev for (i = 0; i < entry->nvec_used; i++) BUG_ON(irq_has_action(entry->irq + i)); - if (dev->msi_irq_groups) { - msi_destroy_sysfs(&dev->dev, dev->msi_irq_groups); - dev->msi_irq_groups = NULL; - } - pci_msi_teardown_msi_irqs(dev); list_for_each_entry_safe(entry, tmp, msi_list, list) { @@ -417,7 +412,6 @@ static int msi_verify_entries(struct pci static int msi_capability_init(struct pci_dev *dev, int nvec, struct irq_affinity *affd) { - const struct attribute_group **groups; struct msi_desc *entry; int ret; @@ -441,14 +435,6 @@ static int msi_capability_init(struct pc if (ret) goto err; - groups = msi_populate_sysfs(&dev->dev); - if (IS_ERR(groups)) { - ret = PTR_ERR(groups); - goto err; - } - - dev->msi_irq_groups = groups; - /* Set MSI enabled bits */ pci_intx_for_msi(dev, 0); pci_msi_set_enable(dev, 1); @@ -576,7 +562,6 @@ static void msix_mask_all(void __iomem * static int msix_capability_init(struct pci_dev *dev, struct msix_entry *entries, int nvec, struct irq_affinity *affd) { - const struct attribute_group **groups; void __iomem *base; int ret, tsize; u16 control; @@ -618,14 +603,6 @@ static int msix_capability_init(struct p msix_update_entries(dev, entries); - groups = msi_populate_sysfs(&dev->dev); - if (IS_ERR(groups)) { - ret = PTR_ERR(groups); - goto out_free; - } - - dev->msi_irq_groups = groups; - /* Set MSI-X enabled bits and unmask the function */ pci_intx_for_msi(dev, 0); dev->msix_enabled = 1; --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -475,7 +475,6 @@ struct pci_dev { #ifdef CONFIG_PCI_MSI void __iomem *msix_base; raw_spinlock_t msi_lock; - const struct attribute_group **msi_irq_groups; #endif struct pci_vpd vpd; #ifdef CONFIG_PCIE_DPC