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igb: remove redundant timer updates and cleanup watchdog_task 

The igb watchdog task is modifying the watchdog timer twice duing a single
run.  It only needs to be called once to reschedule itself for 2 seconds from
the last time it ran.

In addition I removed the allocation of the mac_info structure since it is
only called twice and is easier to access via the e1000_hw struct.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2009-02-06 23:19:50 +00:00 committed by David S. Miller
parent eebbbdba5e
commit 4b1a987736
1 changed files with 5 additions and 5 deletions
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10
drivers/net/igb/igb_main.c
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@ -2314,13 +2314,10 @@ static void igb_watchdog_task(struct work_struct *work)
struct igb_adapter *adapter = container_of(work,
struct igb_adapter, watchdog_task);
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct igb_ring *tx_ring = adapter->tx_ring;
struct e1000_mac_info *mac = &adapter->hw.mac;
u32 link;
u32 eics = 0;
s32 ret_val;
int i;
link = igb_has_link(adapter);
@ -2365,6 +2362,7 @@ static void igb_watchdog_task(struct work_struct *work)
netif_carrier_on(netdev);
netif_tx_wake_all_queues(netdev);
/* link state has changed, schedule phy info update */
if (!test_bit(__IGB_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
round_jiffies(jiffies + 2 * HZ));
@ -2378,6 +2376,8 @@ static void igb_watchdog_task(struct work_struct *work)
netdev->name);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
/* link state has changed, schedule phy info update */
if (!test_bit(__IGB_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
round_jiffies(jiffies + 2 * HZ));
@ -2387,9 +2387,9 @@ static void igb_watchdog_task(struct work_struct *work)
link_up:
igb_update_stats(adapter);
mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
adapter->tpt_old = adapter->stats.tpt;
mac->collision_delta = adapter->stats.colc - adapter->colc_old;
hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old;
adapter->colc_old = adapter->stats.colc;
adapter->gorc = adapter->stats.gorc - adapter->gorc_old;