[SCSI] pm8001: 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>
Acked-by: lindar_liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 44c2f82..f7c1896 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -735,7 +735,7 @@ static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha)
        pdev = pm8001_ha->pdev;
 
 #ifdef PM8001_USE_MSIX
-       if (pci_find_capability(pdev, PCI_CAP_ID_MSIX))
+       if (pdev->msix_cap)
                return pm8001_setup_msix(pm8001_ha);
        else {
                PM8001_INIT_DBG(pm8001_ha,