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authorMatt Turner <matt.turner@intel.com>2017-11-07 14:13:30 -0800
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-01-24 12:27:48 -0800
commitb701cacdbcfb65a5ba38d9d4121c12a0a4eaa01a (patch)
tree3a939f954b75aa3e3469f82f5d2ad17bd4e709bc
parent28cb2d1b0c8cd25cf4c899cee6e1582cfa3f330f (diff)
e1000e: Set HTHRESH when PTHRESH is used
According to section 12.0.3.4.13 "Receive Descriptor Control - RXDCTL" of the IntelĀ® 82579 Gigabit Ethernet PHY Datasheet v2.1: "HTHRESH should be given a non zero value when ever PTHRESH is used." In RXDCTL(0), PTHRESH lives at bits 5:0, and HTHREST lives at bits 13:8. Set only bit 8 of HTHREST as is done in e1000_flush_rx_ring(). Found by inspection. Signed-off-by: Matt Turner <matt.turner@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/e1000e/netdev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 9f18d39bdc8f..5af93ce5acc6 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -3303,7 +3303,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
if (adapter->flags & FLAG_IS_ICH) {
u32 rxdctl = er32(RXDCTL(0));
- ew32(RXDCTL(0), rxdctl | 0x3);
+ ew32(RXDCTL(0), rxdctl | 0x3 | BIT(8));
}
pm_qos_update_request(&adapter->pm_qos_req, lat);