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igb: fix stats for i210 rx_fifo_errors 

RQDPC on i210/i211 is R/W not ReadClear. Clear after reading.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.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:
Todd Fujinaka 2014-04-08 05:36:15 +00:00 committed by Jeff Kirsher
parent 3e7986f67c
commit e66c083aab
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/intel/igb/igb_main.c
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@ -5193,8 +5193,10 @@ void igb_update_stats(struct igb_adapter *adapter,
rcu_read_lock();
for (i = 0; i < adapter->num_rx_queues; i++) {
u32 rqdpc = rd32(E1000_RQDPC(i));
struct igb_ring *ring = adapter->rx_ring[i];
u32 rqdpc = rd32(E1000_RQDPC(i));
if (hw->mac.type >= e1000_i210)
wr32(E1000_RQDPC(i), 0);
if (rqdpc) {
ring->rx_stats.drops += rqdpc;