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e1000e: Do not write lsc to ics in msi-x mode

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In msi-x mode, there is no handler for the lsc interrupt so there is no
point in writing that to ics now that we always assume Other interrupts
are caused by lsc.

Reviewed-by: Jasna Hodzic <jhodzic@ucdavis.edu>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Benjamin Poirier
2015-11-09 15:50:20 -08:00
committed by Jeff Kirsher
parent 16ecba59bc
commit a61cfe4ffa
2 changed files with 19 additions and 12 deletions
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28
drivers/net/ethernet/intel/e1000e/netdev.c
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@@ -4132,10 +4132,24 @@ void e1000e_reset(struct e1000_adapter *adapter)
}
void e1000e_up(struct e1000_adapter *adapter)
/**
* e1000e_trigger_lsc - trigger an LSC interrupt
* @adapter:
*
* Fire a link status change interrupt to start the watchdog.
**/
static void e1000e_trigger_lsc(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
if (adapter->msix_entries)
ew32(ICS, E1000_ICS_OTHER);
else
ew32(ICS, E1000_ICS_LSC);
}
void e1000e_up(struct e1000_adapter *adapter)
{
/* hardware has been reset, we need to reload some things */
e1000_configure(adapter);
@@ -4147,11 +4161,7 @@ void e1000e_up(struct e1000_adapter *adapter)
netif_start_queue(adapter->netdev);
/* fire a link change interrupt to start the watchdog */
if (adapter->msix_entries)
ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
else
ew32(ICS, E1000_ICS_LSC);
e1000e_trigger_lsc(adapter);
}
static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
@@ -4576,11 +4586,7 @@ static int e1000_open(struct net_device *netdev)
hw->mac.get_link_status = true;
pm_runtime_put(&pdev->dev);
/* fire a link status change interrupt to start the watchdog */
if (adapter->msix_entries)
ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
else
ew32(ICS, E1000_ICS_LSC);
e1000e_trigger_lsc(adapter);
return 0;