Commit b701cacd authored by Matt Turner's avatar Matt Turner Committed by Jeff Kirsher

e1000e: Set HTHRESH when PTHRESH is used

According to section 12.0.3.4.13 "Receive Descriptor Control - RXDCTL"
of the Intel® 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: default avatarMatt Turner <matt.turner@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 28cb2d1b
...@@ -3303,7 +3303,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) ...@@ -3303,7 +3303,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
if (adapter->flags & FLAG_IS_ICH) { if (adapter->flags & FLAG_IS_ICH) {
u32 rxdctl = er32(RXDCTL(0)); 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); pm_qos_update_request(&adapter->pm_qos_req, lat);
......
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