diff mbox

[6/9] myri10ge: remove unnecessary read of PCI_CAP_ID_EXP

Message ID 1309187108-12715-6-git-send-email-mason@myri.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Jon Mason June 27, 2011, 3:05 p.m. UTC 
The PCIE capability offset is saved during PCI bus walking.  It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.

Signed-off-by: Jon Mason <mason@myri.com>
---
 drivers/net/myri10ge/myri10ge.c |   11 +++++------
 1 files changed, 5 insertions(+), 6 deletions(-)

Comments

David Miller June 29, 2011, 1:03 p.m. UTC | #1 
From: Jon Mason <mason@myri.com>
Date: Mon, 27 Jun 2011 10:05:05 -0500

> The PCIE capability offset is saved during PCI bus walking.  It will
> remove an unnecessary search in the PCI configuration space if this
> value is referenced instead of reacquiring it.
> 
> Signed-off-by: Jon Mason <mason@myri.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 83cbf2c..851365c 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1081,7 +1081,7 @@  static int myri10ge_toggle_relaxed(struct pci_dev *pdev, int on)
 	int ret, cap, err;
 	u16 ctl;
 
-	cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	cap = pci_pcie_cap(pdev);
 	if (!cap)
 		return 0;
 
@@ -3191,7 +3191,7 @@  static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
 {
 	struct pci_dev *bridge = mgp->pdev->bus->self;
 	struct device *dev = &mgp->pdev->dev;
-	unsigned cap;
+	int cap;
 	unsigned err_cap;
 	u16 val;
 	u8 ext_type;
@@ -3201,7 +3201,7 @@  static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
 		return;
 
 	/* check that the bridge is a root port */
-	cap = pci_find_capability(bridge, PCI_CAP_ID_EXP);
+	cap = pci_pcie_cap(bridge);
 	pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val);
 	ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
 	if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
@@ -3219,8 +3219,7 @@  static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
 						" to force ECRC\n");
 					return;
 				}
-				cap =
-				    pci_find_capability(bridge, PCI_CAP_ID_EXP);
+				cap = pci_pcie_cap(bridge);
 				pci_read_config_word(bridge,
 						     cap + PCI_CAP_FLAGS, &val);
 				ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
@@ -3341,7 +3340,7 @@  static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
 		int link_width, exp_cap;
 		u16 lnk;
 
-		exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP);
+		exp_cap = pci_pcie_cap(mgp->pdev);
 		pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
 		link_width = (lnk >> 4) & 0x3f;