cxgb3: disable high freq non-data interrupts

Under RX pressure, The HW might generate a high load of interrupts
to signal mac fifo or free lists overflow.
Disable the interrupts, and poll the relevant status bits
to maintain stats.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index 7d779d18e137..a7555cb3fa4a 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -2725,7 +2725,8 @@ irq_handler_t t3_intr_handler(struct adapter *adap, int polling)
  */
 void t3_sge_err_intr_handler(struct adapter *adapter)
 {
-        unsigned int v, status = t3_read_reg(adapter, A_SG_INT_CAUSE);
+        unsigned int v, status = t3_read_reg(adapter, A_SG_INT_CAUSE) &
+                                 ~F_FLEMPTY;
 
         if (status & SGE_PARERR)
                 CH_ALERT(adapter, "SGE parity error (0x%x)\n",