diff options
| author | Benjamin Poirier <bpoirier@suse.com> | 2015-11-09 15:50:20 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-12-14 20:09:18 -0800 |
| commit | a61cfe4ffad7864a07e0c74969ca7ceb77ab2f1f (patch) | |
| tree | fde2c9afaeda8041a2fb0af7644fcae578f62ded /drivers/net/ethernet/intel | |
| parent | 16ecba59bc333d6282ee057fb02339f77a880beb (diff) | |
| download | linux-a61cfe4ffad7864a07e0c74969ca7ceb77ab2f1f.tar.gz | |
e1000e: Do not write lsc to ics in msi-x mode
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>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/defines.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/netdev.c | 28 |
2 files changed, 19 insertions, 12 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/defines.h b/drivers/net/ethernet/intel/e1000e/defines.h index 133d4074dbe4..f7c7804d79e5 100644 --- a/drivers/net/ethernet/intel/e1000e/defines.h +++ b/drivers/net/ethernet/intel/e1000e/defines.h @@ -441,12 +441,13 @@ #define E1000_IMS_RXQ1 E1000_ICR_RXQ1 /* Rx Queue 1 Interrupt */ #define E1000_IMS_TXQ0 E1000_ICR_TXQ0 /* Tx Queue 0 Interrupt */ #define E1000_IMS_TXQ1 E1000_ICR_TXQ1 /* Tx Queue 1 Interrupt */ -#define E1000_IMS_OTHER E1000_ICR_OTHER /* Other Interrupts */ +#define E1000_IMS_OTHER E1000_ICR_OTHER /* Other Interrupt */ /* Interrupt Cause Set */ #define E1000_ICS_LSC E1000_ICR_LSC /* Link Status Change */ #define E1000_ICS_RXSEQ E1000_ICR_RXSEQ /* Rx sequence error */ #define E1000_ICS_RXDMT0 E1000_ICR_RXDMT0 /* Rx desc min. threshold */ +#define E1000_ICS_OTHER E1000_ICR_OTHER /* Other Interrupt */ /* Transmit Descriptor Control */ #define E1000_TXDCTL_PTHRESH 0x0000003F /* TXDCTL Prefetch Threshold */ diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 56bc422dc831..d59c0bcb59aa 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -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; |