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Date: Thu, 8 Aug 2013 21:03:12 +0800
From: Yijing Wang <wangyijing@...wei.com>
To: "David S. Miller" <davem@...emloft.net>
CC: Hanjun Guo <guohanjun@...wei.com>, <jiang.liu@...wei.com>,
Yijing Wang <wangyijing@...wei.com>,
Nithin Nayak Sujir <nsujir@...adcom.com>,
Michael Chan <mchan@...adcom.com>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH 16/16] tg3: clean up unnecessary MSI/MSI-X capability find
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@...wei.com>
Cc: Nithin Nayak Sujir <nsujir@...adcom.com>
Cc: Michael Chan <mchan@...adcom.com>
Cc: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
drivers/net/ethernet/broadcom/tg3.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index ddebc7a..11cad77 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -15917,7 +15917,7 @@ static int tg3_get_invariants(struct tg3 *tp, const struct pci_device_id *ent)
*/
if (tg3_flag(tp, 5780_CLASS)) {
tg3_flag_set(tp, 40BIT_DMA_BUG);
- tp->msi_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_MSI);
+ tp->msi_cap = tp->pdev->msi_cap;
} else {
struct pci_dev *bridge = NULL;
--
1.7.1
--
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