tree fd91fc5d9907d6cffd74876c80acc386d2dd7dac
parent bdbc063129e811264cd6c311d8c2d9b95de01231
author Yan, Zheng <zheng.z.yan@intel.com> 1325708617 +0000
committer David S. Miller <davem@davemloft.net> 1325787123 -0500

igb: add basic runtime PM support

Use the runtime power management framework to add basic runtime PM support
to the igb driver. Namely, make the driver suspend the device when the link
is off and set it up for generating a wakeup event after the link has been
detected again. This feature is disabled by default.

Based on e1000e's runtime PM code.

Changes since v1:
Don't suspend the device when shutting down the interface.
Avoid race between runtime suspending and ethtool operations.

Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>