[SCSI] pm8001: use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)

Pci core has been saved pm cap register offset by pdev->pm_cap in
pci_pm_init() in init path. So we can use pdev->pm_cap instead of using
pci_find_capability(pdev, PCI_CAP_ID_PM) for better performance and simplified
code.

Tested-by: Lindar Liu <lindar_liu@usish.com>
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 e4b9bc7..3861aa1 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -912,14 +912,13 @@ static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 {
        struct sas_ha_struct *sha = pci_get_drvdata(pdev);
        struct pm8001_hba_info *pm8001_ha;
-       int i , pos;
+       int i;
        u32 device_state;
        pm8001_ha = sha->lldd_ha;
        flush_workqueue(pm8001_wq);
        scsi_block_requests(pm8001_ha->shost);
-       pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
-       if (pos == 0) {
-               printk(KERN_ERR " PCI PM not supported\n");
+       if (!pdev->pm_cap) {
+               dev_err(&pdev->dev, " PCI PM not supported\n");
                return -ENODEV;
        }
        PM8001_CHIP_DISP->interrupt_disable(pm8001_ha, 0xFF);