[PATCH] e1000: Fix regression: garbled stats and irq allocation during swsusp

[Auke Kok <auke-jan.h.kok@intel.com>]

e1000: Fix regression: garbled stats and irq allocation during swsusp

After 7.0.33/2.6.16, e1000 suspend/resume left the user with an enabled
device showing garbled statistics and undetermined irq allocation state,
where `ifconfig eth0 down` would display `trying to free already freed irq`.

Explicitly free and allocate irq as well as powerup the PHY during resume
fixes.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index c0269b5..32cdccb 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -5081,6 +5081,8 @@ #endif
  	if (adapter->hw.phy_type == e1000_phy_igp_3)
  		e1000_phy_powerdown_workaround(&adapter->hw);

+	e1000_free_irq(adapter);
+
  	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
  	 * would have already happened in close and is redundant. */
  	e1000_release_hw_control(adapter);
@@ -5111,6 +5113,10 @@ e1000_resume(struct pci_dev *pdev)
  	pci_enable_wake(pdev, PCI_D3hot, 0);
  	pci_enable_wake(pdev, PCI_D3cold, 0);

+	if ((err = e1000_request_irq(adapter)))
+		return err;
+
+	e1000_power_up_phy(adapter);
  	e1000_reset(adapter);
  	E1000_WRITE_REG(&adapter->hw, WUS, ~0);