linux-kernel - [tip: irq/msi] x86/pci/XEN: Use PCI device property

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Date:   Thu, 16 Dec 2021 21:41:14 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Gunthorpe <jgg@...dia.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: irq/msi] x86/pci/XEN: Use PCI device property

The following commit has been merged into the irq/msi branch of tip:

Commit-ID:     0bcfade920804d597888e4181bc315a3c500280d
Gitweb:        https://git.kernel.org/tip/0bcfade920804d597888e4181bc315a3c500280d
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Fri, 10 Dec 2021 23:18:46 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Thu, 16 Dec 2021 22:16:37 +01:00

x86/pci/XEN: Use PCI device property

instead of fiddling with MSI descriptors.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Link: https://lore.kernel.org/r/20211210221813.311410967@linutronix.de

---
 arch/x86/pci/xen.c |  9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index a63d30a..bfd87b4 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -399,9 +399,7 @@ static void xen_teardown_msi_irqs(struct pci_dev *dev)
 
 static void xen_pv_teardown_msi_irqs(struct pci_dev *dev)
 {
-	struct msi_desc *msidesc = first_pci_msi_entry(dev);
-
-	if (msidesc->pci.msi_attrib.is_msix)
+	if (dev->msix_enabled)
 		xen_pci_frontend_disable_msix(dev);
 	else
 		xen_pci_frontend_disable_msi(dev);
@@ -417,10 +415,7 @@ static int xen_msi_domain_alloc_irqs(struct irq_domain *domain,
 	if (WARN_ON_ONCE(!dev_is_pci(dev)))
 		return -EINVAL;
 
-	if (first_msi_entry(dev)->pci.msi_attrib.is_msix)
-		type = PCI_CAP_ID_MSIX;
-	else
-		type = PCI_CAP_ID_MSI;
+	type = to_pci_dev(dev)->msix_enabled ? PCI_CAP_ID_MSIX : PCI_CAP_ID_MSI;
 
 	return xen_msi_ops.setup_msi_irqs(to_pci_dev(dev), nvec, type);
 }