diff options
| author | Yijing Wang <wangyijing@huawei.com> | 2013-08-08 21:12:36 +0800 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2013-08-14 12:18:52 +0200 |
| commit | 82fcfc674ebe2a0d83a6dd1b6ffa5589a94e4d4c (patch) | |
| tree | 69b59ec451e7ee695af4f592d296d5e23976bf7c /drivers/iommu/amd_iommu_init.c | |
| parent | d4e4ab86bcba5a72779c43dc1459f71fea3d89c8 (diff) | |
| download | talos-op-linux-82fcfc674ebe2a0d83a6dd1b6ffa5589a94e4d4c.tar.gz talos-op-linux-82fcfc674ebe2a0d83a6dd1b6ffa5589a94e4d4c.zip | |
iommu/amd: Clean up unnecessary MSI/MSI-X capability find
PCI core will initialize device MSI/MSI-X capability in
pci_msi_init_pci_dev(). So device driver should use
pci_dev->msi_cap/msix_cap to determine whether the device
support MSI/MSI-X instead of using
pci_find_capability(pci_dev, PCI_CAP_ID_MSI/MSIX). Access
to PCIe device config space again will consume more time.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 7acbf351e9af..8f798be6e398 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1384,7 +1384,7 @@ static int iommu_init_msi(struct amd_iommu *iommu) if (iommu->int_enabled) goto enable_faults; - if (pci_find_capability(iommu->dev, PCI_CAP_ID_MSI)) + if (iommu->dev->msi_cap) ret = iommu_setup_msi(iommu); else ret = -ENODEV; |
