iommu/amd: Clean up unnecessary MSI/MSI-X capability find
authorYijing Wang <wangyijing@huawei.com>
Thu, 8 Aug 2013 13:12:36 +0000 (21:12 +0800)
committerJoerg Roedel <joro@8bytes.org>
Wed, 14 Aug 2013 10:18:52 +0000 (12:18 +0200)
commit82fcfc674ebe2a0d83a6dd1b6ffa5589a94e4d4c
tree69b59ec451e7ee695af4f592d296d5e23976bf7c
parentd4e4ab86bcba5a72779c43dc1459f71fea3d89c8
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>
drivers/iommu/amd_iommu_init.c