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Commit a9047f24 authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

vfio-pci: Use cached MSI/MSI-X capabilities 



We now cache the MSI/MSI-X capability offsets in the struct pci_dev,
so no need to find the capabilities again.

Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 508d1aa6

drivers/vfio/pci/vfio_pci.c

+3 −3
Original line number Diff line number Diff line
@@ -70,7 +70,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev) 
		pci_write_config_word(pdev, PCI_COMMAND, cmd);

	}



	msix_pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);

	msix_pos = pdev->msix_cap;

	if (msix_pos) {

		u16 flags;

		u32 table;
@@ -183,7 +183,7 @@ static int vfio_pci_get_irq_count(struct vfio_pci_device *vdev, int irq_type) 
		u8 pos;

		u16 flags;



		pos = pci_find_capability(vdev->pdev, PCI_CAP_ID_MSI);

		pos = vdev->pdev->msi_cap;

		if (pos) {

			pci_read_config_word(vdev->pdev,

					     pos + PCI_MSI_FLAGS, &flags);
@@ -194,7 +194,7 @@ static int vfio_pci_get_irq_count(struct vfio_pci_device *vdev, int irq_type) 
		u8 pos;

		u16 flags;



		pos = pci_find_capability(vdev->pdev, PCI_CAP_ID_MSIX);

		pos = vdev->pdev->msix_cap;

		if (pos) {

			pci_read_config_word(vdev->pdev,

					     pos + PCI_MSIX_FLAGS, &flags);