linux-kernel - [PATCH 2/2] PCI: Use PCI Express Capability accessors

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Date:	Fri, 25 Jan 2013 17:55:45 -0700
From:	Myron Stowe <myron.stowe@...hat.com>
To:	bhelgaas@...gle.com
Cc:	linux-pci@...r.kernel.org, jiang.liu@...wei.com,
	mcgrof@....qualcomm.com, mcgrof@...not-panic.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] PCI: Use PCI Express Capability accessors

Use PCI Express Capability access functions to simplify device
Capabilities Register usages.

Signed-off-by: Myron Stowe <myron.stowe@...hat.com>
---

 drivers/pci/access.c            |    4 ++--
 drivers/pci/pcie/portdrv_core.c |    2 +-
 include/linux/pci.h             |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 3af0478..5278ac6 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -472,7 +472,7 @@ EXPORT_SYMBOL_GPL(pci_cfg_access_unlock);
 
 static inline int pcie_cap_version(const struct pci_dev *dev)
 {
-	return dev->pcie_flags_reg & PCI_EXP_FLAGS_VERS;
+	return pcie_caps_reg(dev) & PCI_EXP_FLAGS_VERS;
 }
 
 static inline bool pcie_cap_has_devctl(const struct pci_dev *dev)
@@ -497,7 +497,7 @@ static inline bool pcie_cap_has_sltctl(const struct pci_dev *dev)
 	return pcie_cap_version(dev) > 1 ||
 	       type == PCI_EXP_TYPE_ROOT_PORT ||
 	       (type == PCI_EXP_TYPE_DOWNSTREAM &&
-		dev->pcie_flags_reg & PCI_EXP_FLAGS_SLOT);
+		pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT);
 }
 
 static inline bool pcie_cap_has_rtctl(const struct pci_dev *dev)
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index b42133a..31063ac 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -272,7 +272,7 @@ static int get_port_device_capability(struct pci_dev *dev)
 
 	/* Hot-Plug Capable */
 	if ((cap_mask & PCIE_PORT_SERVICE_HP) &&
-	    dev->pcie_flags_reg & PCI_EXP_FLAGS_SLOT) {
+	    pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT) {
 		pcie_capability_read_dword(dev, PCI_EXP_SLTCAP, &reg32);
 		if (reg32 & PCI_EXP_SLTCAP_HPC) {
 			services |= PCIE_PORT_SERVICE_HP;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 78581e1..63b3628 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1707,7 +1707,7 @@ static inline u16 pcie_caps_reg(const struct pci_dev *dev)
  */
 static inline int pci_pcie_type(const struct pci_dev *dev)
 {
-	return (dev->pcie_flags_reg & PCI_EXP_FLAGS_TYPE) >> 4;
+	return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
 }
 
 void pci_request_acs(void);

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