From dba90dfe48e2e00e79a15c95940730b6926ee176 Mon Sep 17 00:00:00 2001 From: Kenji Kaneshige Date: Wed, 11 Nov 2009 14:32:42 +0900 Subject: [PATCH] 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 Signed-off-by: Jesse Barnes --- drivers/pci/pcie/portdrv_core.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 52f84fca9f7d..ce99c7121372 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, ®16); 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, ®16); /* 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, ®); @@ -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, ®16); + pos = pci_pcie_cap(dev); + pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, ®16); port_data->port_type = (reg16 >> 4) & PORT_TYPE_MASK; capabilities = get_port_device_capability(dev); -- 2.39.5