From patchwork Sat Nov 27 01:18:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12641823 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93806C4321E for ; Sat, 27 Nov 2021 01:20:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345575AbhK0BYL (ORCPT ); Fri, 26 Nov 2021 20:24:11 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:35064 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344709AbhK0BWH (ORCPT ); Fri, 26 Nov 2021 20:22:07 -0500 Message-ID: <20211126223824.737214551@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1637975932; 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=aZOv1txgfOaOUbPFrZO+dbMPb9SLUMuv6lc2RMuyFjg=; b=nxj8kvRG0udwnyf6qeanYo6Y4W8sZG5eqxablsikiqcCTA7VdivSUMTsYQKJzLxw6OH8wK URC4Potp5y1ag0slj7KxMuRCI+jgKS8c+FDtIXu+GjNrGKyWdq8mzVdDAtQeYZAPF8QeJp mEC2VvlU+WC1dQQyvctPXd9CKM/Bper6bdkyneDsU7gSI4Syz1McOMndl4JO4LO314Hzl9 xZjk7yCqKwmQqLZS7YQRflq9kqQj/mgdAtXrFAh2sIRdgapxhlCo1uAjoVZ1WQcMdpXITj jEf/N1becZCL3GaG7EAAq2c+wY32vqs051c+pgYRG4wAeO0HTTX8Oi7yRxcUlg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1637975932; 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=aZOv1txgfOaOUbPFrZO+dbMPb9SLUMuv6lc2RMuyFjg=; b=QQP1VVw6WuTJXvvOWqLKDexxgcwgpEeBUNVJEa0ULD4SwafNzfa75ksMJErjOcHpZVno3B Gmeyg67Xv64c4RAw== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , Wei Liu , x86@kernel.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, Michael Ellerman , Paul Mackerras , Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org, Thomas Bogendoerfer , linux-mips@vger.kernel.org, Greg Kroah-Hartman , sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, ath11k@lists.infradead.org, Juergen Gross , Christian Borntraeger , Heiko Carstens Subject: [patch 11/22] x86/hyperv: Refactor hv_msi_domain_free_irqs() References: <20211126222700.862407977@linutronix.de> MIME-Version: 1.0 Date: Sat, 27 Nov 2021 02:18:51 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org No point in looking up things over and over. Just look up the associated irq data and work from there. No functional change. Signed-off-by: Thomas Gleixner Cc: Wei Liu Cc: x86@kernel.org Cc: linux-hyperv@vger.kernel.org Acked-by: Wei Liu --- arch/x86/hyperv/irqdomain.c | 55 +++++++++++++------------------------------- 1 file changed, 17 insertions(+), 38 deletions(-) --- a/arch/x86/hyperv/irqdomain.c +++ b/arch/x86/hyperv/irqdomain.c @@ -253,64 +253,43 @@ static int hv_unmap_msi_interrupt(struct return hv_unmap_interrupt(hv_build_pci_dev_id(dev).as_uint64, old_entry); } -static void hv_teardown_msi_irq_common(struct pci_dev *dev, struct msi_desc *msidesc, int irq) +static void hv_teardown_msi_irq(struct pci_dev *dev, struct irq_data *irqd) { - u64 status; struct hv_interrupt_entry old_entry; - struct irq_desc *desc; - struct irq_data *data; struct msi_msg msg; + u64 status; - desc = irq_to_desc(irq); - if (!desc) { - pr_debug("%s: no irq desc\n", __func__); - return; - } - - data = &desc->irq_data; - if (!data) { - pr_debug("%s: no irq data\n", __func__); - return; - } - - if (!data->chip_data) { + if (!irqd->chip_data) { pr_debug("%s: no chip data\n!", __func__); return; } - old_entry = *(struct hv_interrupt_entry *)data->chip_data; + old_entry = *(struct hv_interrupt_entry *)irqd->chip_data; entry_to_msi_msg(&old_entry, &msg); - kfree(data->chip_data); - data->chip_data = NULL; + kfree(irqd->chip_data); + irqd->chip_data = NULL; status = hv_unmap_msi_interrupt(dev, &old_entry); - if (status != HV_STATUS_SUCCESS) { + if (status != HV_STATUS_SUCCESS) pr_err("%s: hypercall failed, status %lld\n", __func__, status); - return; - } } -static void hv_msi_domain_free_irqs(struct irq_domain *domain, struct device *dev) +static void hv_msi_free_irq(struct irq_domain *domain, + struct msi_domain_info *info, unsigned int virq) { - int i; - struct msi_desc *entry; - struct pci_dev *pdev; + struct irq_data *irqd = irq_get_irq_data(virq); + struct msi_desc *desc; - if (WARN_ON_ONCE(!dev_is_pci(dev))) + if (!irqd) return; - pdev = to_pci_dev(dev); + desc = irq_data_get_msi_desc(irqd); + if (!desc || !desc->irq || WARN_ON_ONCE(!dev_is_pci(desc->dev))) + return; - for_each_pci_msi_entry(entry, pdev) { - if (entry->irq) { - for (i = 0; i < entry->nvec_used; i++) { - hv_teardown_msi_irq_common(pdev, entry, entry->irq + i); - irq_domain_free_irqs(entry->irq + i, 1); - } - } - } + hv_teardown_msi_irq(to_pci_dev(desc->dev), irqd); } /* @@ -329,7 +308,7 @@ static struct irq_chip hv_pci_msi_contro }; static struct msi_domain_ops pci_msi_domain_ops = { - .domain_free_irqs = hv_msi_domain_free_irqs, + .msi_free = hv_msi_free_irq, .msi_prepare = pci_msi_prepare, };