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

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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: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Bjorn Helgaas 2013-04-18 15:12:58 -06:00
parent 508d1aa602
commit a9047f24df
1 changed files with 3 additions and 3 deletions
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6
drivers/vfio/pci/vfio_pci.c
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@ -70,7 +70,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
pci_write_config_word(pdev, PCI_COMMAND, cmd); 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) { if (msix_pos) {
u16 flags; u16 flags;
u32 table; u32 table;
@ -183,7 +183,7 @@ static int vfio_pci_get_irq_count(struct vfio_pci_device *vdev, int irq_type)
u8 pos; u8 pos;
u16 flags; u16 flags;
pos = pci_find_capability(vdev->pdev, PCI_CAP_ID_MSI); pos = vdev->pdev->msi_cap;
if (pos) { if (pos) {
pci_read_config_word(vdev->pdev, pci_read_config_word(vdev->pdev,
pos + PCI_MSI_FLAGS, &flags); 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; u8 pos;
u16 flags; u16 flags;
pos = pci_find_capability(vdev->pdev, PCI_CAP_ID_MSIX); pos = vdev->pdev->msix_cap;
if (pos) { if (pos) {
pci_read_config_word(vdev->pdev, pci_read_config_word(vdev->pdev,
pos + PCI_MSIX_FLAGS, &flags); pos + PCI_MSIX_FLAGS, &flags);