---

yaml
---
r: 117782
b: refs/heads/master
c: c54106b
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d4f12daf7ba4efc506c377a9591ecdb692641fe5
+refs/heads/master: c54106bb3856a7726a814d54aa0eb32f5419a743

trunk/drivers/net/igb/igb_main.c

@@ -38,6 +38,7 @@
 #include <linux/ethtool.h>
 #include <linux/if_vlan.h>
 #include <linux/pci.h>
+#include <linux/pci-aspm.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/if_ether.h>
@@ -966,10 +967,11 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	struct net_device *netdev;
 	struct igb_adapter *adapter;
 	struct e1000_hw *hw;
+	struct pci_dev *us_dev;
 	const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
 	unsigned long mmio_start, mmio_len;
-	int i, err, pci_using_dac;
-	u16 eeprom_data = 0;
+	int i, err, pci_using_dac, pos;
+	u16 eeprom_data = 0, state = 0;
 	u16 eeprom_apme_mask = IGB_EEPROM_APME;
 	u32 part_num;
 	int bars, need_ioport;
@@ -1004,6 +1006,28 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 		}
 	}
 
+	/* 82575 requires that the pci-e link partner disable the L0s state */
+	switch (pdev->device) {
+	case E1000_DEV_ID_82575EB_COPPER:
+	case E1000_DEV_ID_82575EB_FIBER_SERDES:
+	case E1000_DEV_ID_82575GB_QUAD_COPPER:
+		us_dev = pdev->bus->self;
+		pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP);
+		if (pos) {
+			pci_read_config_word(us_dev, pos + PCI_EXP_LNKCTL,
+			                     &state);
+			state &= ~PCIE_LINK_STATE_L0S;
+			pci_write_config_word(us_dev, pos + PCI_EXP_LNKCTL,
+			                      state);
+			printk(KERN_INFO "Disabling ASPM L0s upstream switch "
+			       "port %x:%x.%x\n", us_dev->bus->number,
+			       PCI_SLOT(us_dev->devfn),
+			       PCI_FUNC(us_dev->devfn));
+		}
+	default:
+		break;
+	}
+
 	err = pci_request_selected_regions(pdev, bars, igb_driver_name);
 	if (err)
 		goto err_pci_reg;