diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-07-15 20:25:55 +0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-09-09 10:08:38 -0700 |
| commit | dee23594d587386e9fda76732aa5f5a487709510 (patch) | |
| tree | 3df251c2fd5af7f3fe33cdf548201fed92274450 /drivers/net/ethernet/intel/e1000e/netdev.c | |
| parent | d7cb9da1864d0986d5fca550e20c608d8616ff52 (diff) | |
e1000e: Make speed detection on hotplugging cable more reliable
After hot plugging an 1Gbps Ethernet cable with 1Gbps link partner, the
MII_BMSR may report 10Mbps, renders the network rather slow.
The issue has much lower fail rate after commit 59653e6497d1 ("e1000e:
Make watchdog use delayed work"), which essentially introduces some
delay before running the watchdog task.
But there's still a chance that the hot plugging event and the queued
watchdog task gets run at the same time, then the original issue can be
observed once again.
So let's use mod_delayed_work() to add a deterministic 1 second delay
before running watchdog task, after an interrupt.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/netdev.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 8a3f035c3a5f..d7d56e42a6aa 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -1780,8 +1780,8 @@ static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) } /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - queue_delayed_work(adapter->e1000_workqueue, - &adapter->watchdog_task, 1); + mod_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, HZ); } /* Reset on uncorrectable ECC error */ @@ -1861,8 +1861,8 @@ static irqreturn_t e1000_intr(int __always_unused irq, void *data) } /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - queue_delayed_work(adapter->e1000_workqueue, - &adapter->watchdog_task, 1); + mod_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, HZ); } /* Reset on uncorrectable ECC error */ @@ -1907,8 +1907,8 @@ static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) hw->mac.get_link_status = true; /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - queue_delayed_work(adapter->e1000_workqueue, - &adapter->watchdog_task, 1); + mod_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, HZ); } if (!test_bit(__E1000_DOWN, &adapter->state)) |