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: Mike Miller <mike.mil...@hp.com>
Cc: iss_storage...@hp.com
Cc: linux-kernel@vger.kernel.org
---
drivers/block/cciss.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 62b6c2c..883715a 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4078,7 +4078,7 @@ static void cciss_interrupt_mode(ctlr_info_t *h)
(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) {
err = pci_enable_msix(h->pdev, cciss_msix_entries, 4);
if (!err) {
h->intr[0] = cciss_msix_entries[0].vector;
@@ -4098,7 +4098,7 @@ static void cciss_interrupt_mode(ctlr_info_t *h)
goto default_int_mode;
}
}
- if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
+ if (h->pdev->msi_cap) {
if (!pci_enable_msi(h->pdev))
h->msi_vector = 1;
else
--
1.7.1
--
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