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 <wangyij...@huawei.com>
Cc: Anil Ravindranath <anil_ravindran...@pmc-sierra.com>
Cc: "James E.J. Bottomley" <jbottom...@parallels.com>
Cc: linux-scsi@vger.kernel.org
---
drivers/scsi/pmcraid.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 1eb7b02..d5b3315 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -4678,8 +4678,7 @@ pmcraid_register_interrupt_handler(struct
pmcraid_instance *pinstance)
int rc;
struct pci_dev *pdev = pinstance->pdev;
- if ((pmcraid_enable_msix) &&
- (pci_find_capability(pdev, PCI_CAP_ID_MSIX))) {
+ if (pmcraid_enable_msix && pdev->msix_cap) {
int num_hrrq = PMCRAID_NUM_MSIX_VECTORS;
struct msix_entry entries[PMCRAID_NUM_MSIX_VECTORS];
int i;
--
1.7.1
--
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