diff options
| author | Yan, Zheng <zheng.z.yan@intel.com> | 2012-01-05 00:23:37 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-05 22:12:03 +0400 |
| commit | 749ab2cd127046df79084b6b9165b23491b1db5f (patch) | |
| tree | fd91fc5d9907d6cffd74876c80acc386d2dd7dac /drivers/net/ethernet/intel/igb/igb_ethtool.c | |
| parent | bdbc063129e811264cd6c311d8c2d9b95de01231 (diff) | |
| download | linux-749ab2cd127046df79084b6b9165b23491b1db5f.tar.xz | |
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>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_ethtool.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index f1206be4e71d..7998bf4d5946 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -36,6 +36,7 @@ #include <linux/ethtool.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include "igb.h" @@ -2161,6 +2162,19 @@ static void igb_get_strings(struct net_device *netdev, u32 stringset, u8 *data) } } +static int igb_ethtool_begin(struct net_device *netdev) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + pm_runtime_get_sync(&adapter->pdev->dev); + return 0; +} + +static void igb_ethtool_complete(struct net_device *netdev) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + pm_runtime_put(&adapter->pdev->dev); +} + static const struct ethtool_ops igb_ethtool_ops = { .get_settings = igb_get_settings, .set_settings = igb_set_settings, @@ -2187,6 +2201,8 @@ static const struct ethtool_ops igb_ethtool_ops = { .get_ethtool_stats = igb_get_ethtool_stats, .get_coalesce = igb_get_coalesce, .set_coalesce = igb_set_coalesce, + .begin = igb_ethtool_begin, + .complete = igb_ethtool_complete, }; void igb_set_ethtool_ops(struct net_device *netdev) |