Patchwork [RFC,v2,08/32] PCI/pciehp: use PCIe capabilities access functions to simplify implementation

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Submitter Jiang Liu
Date July 24, 2012, 4:31 p.m.
Message ID <1343147504-25891-9-git-send-email-jiang.liu@huawei.com>
Download mbox | patch
Permalink /patch/172947/
State Superseded
Headers show

Comments

Jiang Liu - July 24, 2012, 4:31 p.m.
From: Jiang Liu <jiang.liu@huawei.com>

Use PCIe capabilities access functions to simplify pciehp implementation.

Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
 drivers/pci/hotplug/pciehp_acpi.c |    6 +-----
 drivers/pci/hotplug/pciehp_hpc.c  |   10 +++++-----
 2 files changed, 6 insertions(+), 10 deletions(-)

Patch

diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index 376d70d..751b41c 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -81,16 +81,12 @@  static struct list_head __initdata dummy_slots = LIST_HEAD_INIT(dummy_slots);
 /* Dummy driver for dumplicate name detection */
 static int __init dummy_probe(struct pcie_device *dev)
 {
-	int pos;
 	u32 slot_cap;
 	acpi_handle handle;
 	struct dummy_slot *slot, *tmp;
 	struct pci_dev *pdev = dev->port;
 
-	pos = pci_pcie_cap(pdev);
-	if (!pos)
-		return -ENODEV;
-	pci_read_config_dword(pdev, pos + PCI_EXP_SLTCAP, &slot_cap);
+	pci_pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &slot_cap);
 	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
 	if (!slot)
 		return -ENOMEM;
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 302451e..c81f27c 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -44,25 +44,25 @@ 
 static inline int pciehp_readw(struct controller *ctrl, int reg, u16 *value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_read_config_word(dev, pci_pcie_cap(dev) + reg, value);
+	return pci_pcie_capability_read_word(dev, reg, value);
 }
 
 static inline int pciehp_readl(struct controller *ctrl, int reg, u32 *value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_read_config_dword(dev, pci_pcie_cap(dev) + reg, value);
+	return pci_pcie_capability_read_dword(dev, reg, value);
 }
 
 static inline int pciehp_writew(struct controller *ctrl, int reg, u16 value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_write_config_word(dev, pci_pcie_cap(dev) + reg, value);
+	return pci_pcie_capability_write_word(dev, reg, value);
 }
 
 static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_write_config_dword(dev, pci_pcie_cap(dev) + reg, value);
+	return pci_pcie_capability_write_dword(dev, reg, value);
 }
 
 /* Power Control Command */
@@ -855,7 +855,7 @@  struct controller *pcie_init(struct pcie_device *dev)
 		goto abort;
 	}
 	ctrl->pcie = dev;
-	if (!pci_pcie_cap(pdev)) {
+	if (!pci_is_pcie(pdev)) {
 		ctrl_err(ctrl, "Cannot find PCI Express capability\n");
 		goto abort_ctrl;
 	}