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@xxxxxxxxxx>
Cc: "Stephen M. Cameron" <scameron@xxxxxxxxxxxxxxxxxx>
Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
Cc: iss_storagedev@xxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx
---
drivers/scsi/hpsa.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 7f4f790..05b31f1 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4090,7 +4090,7 @@ static void hpsa_interrupt_mode(struct ctlr_info *h)
if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
(h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
goto default_int_mode;
- if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
+ if (h->pdev->msix_cap) {
dev_info(&h->pdev->dev, "MSIX\n");
err = pci_enable_msix(h->pdev, hpsa_msix_entries,
MAX_REPLY_QUEUES);
@@ -4110,7 +4110,7 @@ static void hpsa_interrupt_mode(struct ctlr_info *h)
goto default_int_mode;
}
}
- if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
+ if (h->pdev->msi_cap) {
dev_info(&h->pdev->dev, "MSI\n");
if (!pci_enable_msi(h->pdev))
h->msi_vector = 1;
--
1.7.1
--
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