pci/pcie: Avoid unnecessary PCIe link retrains

Commit Message

Kenji Kaneshige Nov. 5, 2009, 3:05 a.m. UTC

None

Patch

Index: 20090825/drivers/pci/probe.c
===================================================================
--- 20090825.orig/drivers/pci/probe.c
+++ 20090825/drivers/pci/probe.c
@@ -693,6 +693,7 @@  static void set_pcie_port_type(struct pc
 	if (!pos)
 		return;
 	pdev->is_pcie = 1;
+	pdev->pcie_cap = pos;
 	pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
 	pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
 }
Index: 20090825/include/linux/pci.h
===================================================================
--- 20090825.orig/include/linux/pci.h
+++ 20090825/include/linux/pci.h
@@ -218,6 +218,7 @@  struct pci_dev {
 	unsigned int	class;		/* 3 bytes: (base,sub,prog-if) */
 	u8		revision;	/* PCI revision, low byte of class word */
 	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
+	u8		pcie_cap;	/* PCI-E capability offset */
 	u8		pcie_type;	/* PCI-E device/port type */
 	u8		rom_base_reg;	/* which config register controls the ROM */
 	u8		pin;  		/* which interrupt pin this device uses */