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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2009-11-11 14:32:42 +0900
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-11-24 15:25:13 -0800
commitdba90dfe48e2e00e79a15c95940730b6926ee176 (patch)
treeaf32687abec213653a6432842a8962adcf3a9e8c /drivers
parent39a53062cb5b2ceca6035f3ed67317672f0bcf3b (diff)
downloadop-kernel-dev-dba90dfe48e2e00e79a15c95940730b6926ee176.zip
op-kernel-dev-dba90dfe48e2e00e79a15c95940730b6926ee176.tar.gz
PCIe port bus: use pci_pcie_cap()
Use pci_pcie_cap() instead of pci_find_capability() to get PCIe capability offset in PCI Express Port Bus driver. This avoids unnecessary serarch in PCI configuration space. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/pcie/portdrv_core.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 52f84fc..ce99c71 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -108,7 +108,7 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
* the value in this field indicates which MSI-X Table entry is
* used to generate the interrupt message."
*/
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+ pos = pci_pcie_cap(dev);
pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg16);
entry = (reg16 >> 9) & PCIE_PORT_MSI_VECTOR_MASK;
if (entry >= nr_entries)
@@ -226,7 +226,7 @@ static int get_port_device_capability(struct pci_dev *dev)
u16 reg16;
u32 reg32;
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+ pos = pci_pcie_cap(dev);
pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg16);
/* Hot-Plug Capable */
if (reg16 & PORT_TO_SLOT_MASK) {
@@ -305,7 +305,8 @@ int pcie_port_device_probe(struct pci_dev *dev)
int pos, type;
u16 reg;
- if (!(pos = pci_find_capability(dev, PCI_CAP_ID_EXP)))
+ pos = pci_pcie_cap(dev);
+ if (!pos)
return -ENODEV;
pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg);
@@ -327,7 +328,7 @@ int pcie_port_device_probe(struct pci_dev *dev)
int pcie_port_device_register(struct pci_dev *dev)
{
struct pcie_port_data *port_data;
- int status, capabilities, irq_mode, i, nr_serv;
+ int status, capabilities, irq_mode, i, nr_serv, pos;
int vectors[PCIE_PORT_DEVICE_MAXSERVICES];
u16 reg16;
@@ -337,9 +338,8 @@ int pcie_port_device_register(struct pci_dev *dev)
pci_set_drvdata(dev, port_data);
/* Get port type */
- pci_read_config_word(dev,
- pci_find_capability(dev, PCI_CAP_ID_EXP) +
- PCIE_CAPABILITIES_REG, &reg16);
+ pos = pci_pcie_cap(dev);
+ pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg16);
port_data->port_type = (reg16 >> 4) & PORT_TYPE_MASK;
capabilities = get_port_device_capability(dev);
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