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SubjectRE: [PATCH 8/9] scsi/pm8001: use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)
Date
It works, thanks.

Lindar.

-----Original Message-----
From: Yijing Wang [mailto:wangyijing@huawei.com]
Sent: Tuesday, June 18, 2013 4:24 PM
To: James E.J. Bottomley
Cc: linux-kernel@vger.kernel.org; Hanjun Guo; jiang.liu@huawei.com; Yijing
Wang; xjtuwjp@gmail.com; lindar_liu@usish.com; linux-scsi@vger.kernel.org
Subject: [PATCH 8/9] 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.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Cc: xjtuwjp@gmail.com
Cc: lindar_liu@usish.com
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: linux-scsi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/scsi/pm8001/pm8001_init.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/pm8001/pm8001_init.c
b/drivers/scsi/pm8001/pm8001_init.c
index e4b9bc7..3861aa1 100644
--- 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);
--
1.7.1


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