Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[sfrench/cifs-2.6.git] / drivers / net / e1000e / netdev.c

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 409b58cad0e50df0c34e77f6f31a943b0c306029..ca82f19a7ed183b8139f65e40279f530e8239e6c 100644 (file)
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -621,7 +621,6 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
        struct e1000_buffer *buffer_info;
        unsigned int i, eop;
        unsigned int count = 0;
-       bool cleaned;
        unsigned int total_tx_bytes = 0, total_tx_packets = 0;
 
        i = tx_ring->next_to_clean;
@@ -630,7 +629,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
 
        while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
               (count < tx_ring->count)) {
-               for (cleaned = 0; !cleaned; count++) {
+               bool cleaned = false;
+               for (; !cleaned; count++) {
                        tx_desc = E1000_TX_DESC(*tx_ring, i);
                        buffer_info = &tx_ring->buffer_info[i];
                        cleaned = (i == eop);
@@ -661,8 +661,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
        tx_ring->next_to_clean = i;
 
 #define TX_WAKE_THRESHOLD 32
-       if (cleaned && netif_carrier_ok(netdev) &&
-                    e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
+       if (count && netif_carrier_ok(netdev) &&
+           e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
                /* Make sure that anybody stopping the queue after this
                 * sees the new next_to_clean.
                 */
@@ -4346,7 +4346,7 @@ static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
        }
 }
 
-static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
 {
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct e1000_adapter *adapter = netdev_priv(netdev);
@@ -4409,20 +4409,16 @@ static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
 
                ew32(WUC, E1000_WUC_PME_EN);
                ew32(WUFC, wufc);
-               pci_enable_wake(pdev, PCI_D3hot, 1);
-               pci_enable_wake(pdev, PCI_D3cold, 1);
        } else {
                ew32(WUC, 0);
                ew32(WUFC, 0);
-               pci_enable_wake(pdev, PCI_D3hot, 0);
-               pci_enable_wake(pdev, PCI_D3cold, 0);
        }
 
+       *enable_wake = !!wufc;
+
        /* make sure adapter isn't asleep if manageability is enabled */
-       if (adapter->flags & FLAG_MNG_PT_ENABLED) {
-               pci_enable_wake(pdev, PCI_D3hot, 1);
-               pci_enable_wake(pdev, PCI_D3cold, 1);
-       }
+       if (adapter->flags & FLAG_MNG_PT_ENABLED)
+               *enable_wake = true;
 
        if (adapter->hw.phy.type == e1000_phy_igp_3)
                e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
@@ -4435,6 +4431,26 @@ static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
 
        pci_disable_device(pdev);
 
+       return 0;
+}
+
+static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
+{
+       if (sleep && wake) {
+               pci_prepare_to_sleep(pdev);
+               return;
+       }
+
+       pci_wake_from_d3(pdev, wake);
+       pci_set_power_state(pdev, PCI_D3hot);
+}
+
+static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
+                                    bool wake)
+{
+       struct net_device *netdev = pci_get_drvdata(pdev);
+       struct e1000_adapter *adapter = netdev_priv(netdev);
+
        /*
         * The pci-e switch on some quad port adapters will report a
         * correctable error when the MAC transitions from D0 to D3.  To
@@ -4450,14 +4466,12 @@ static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
                pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
                                      (devctl & ~PCI_EXP_DEVCTL_CERE));
 
-               pci_set_power_state(pdev, pci_choose_state(pdev, state));
+               e1000_power_off(pdev, sleep, wake);
 
                pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
        } else {
-               pci_set_power_state(pdev, pci_choose_state(pdev, state));
+               e1000_power_off(pdev, sleep, wake);
        }
-
-       return 0;
 }
 
 static void e1000e_disable_l1aspm(struct pci_dev *pdev)
@@ -4486,6 +4500,18 @@ static void e1000e_disable_l1aspm(struct pci_dev *pdev)
 }
 
 #ifdef CONFIG_PM
+static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+       int retval;
+       bool wake;
+
+       retval = __e1000_shutdown(pdev, &wake);
+       if (!retval)
+               e1000_complete_shutdown(pdev, true, wake);
+
+       return retval;
+}
+
 static int e1000_resume(struct pci_dev *pdev)
 {
        struct net_device *netdev = pci_get_drvdata(pdev);
@@ -4549,7 +4575,12 @@ static int e1000_resume(struct pci_dev *pdev)
 
 static void e1000_shutdown(struct pci_dev *pdev)
 {
-       e1000_suspend(pdev, PMSG_SUSPEND);
+       bool wake = false;
+
+       __e1000_shutdown(pdev, &wake);
+
+       if (system_state == SYSTEM_POWER_OFF)
+               e1000_complete_shutdown(pdev, false, wake);
 }
 
 #ifdef CONFIG_NET_POLL_CONTROLLER