2 files changed, 4 insertions, 4 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h
index cb3356c9af80..04668b47a1df 100644
--- a/drivers/net/ethernet/intel/e1000e/e1000.h
+++ b/drivers/net/ethernet/intel/e1000e/e1000.h
@@ -175,13 +175,13 @@ struct e1000_info;
 /*
  * in the case of WTHRESH, it appears at least the 82571/2 hardware
  * writes back 4 descriptors when WTHRESH=5, and 3 descriptors when
- * WTHRESH=4, and since we want 64 bytes at a time written back, set
- * it to 5
+ * WTHRESH=4, so a setting of 5 gives the most efficient bus
+ * utilization but to avoid possible Tx stalls, set it to 1
  */
 #define E1000_TXDCTL_DMA_BURST_ENABLE                          \
         (E1000_TXDCTL_GRAN | /* set descriptor granularity */  \
          E1000_TXDCTL_COUNT_DESC |                             \
-         (5 << 16) | /* wthresh must be +1 more than desired */\
+         (1 << 16) | /* wthresh must be +1 more than desired */\
          (1 << 8)  | /* hthresh */                             \
          0x1f)       /* pthresh */
 
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index de57a2ba6bde..f444eb0b76d8 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2831,7 +2831,7 @@ static void e1000_configure_tx(struct e1000_adapter *adapter)
                  * set up some performance related parameters to encourage the
                  * hardware to use the bus more efficiently in bursts, depends
                  * on the tx_int_delay to be enabled,
-                 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
+                 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
                  * hthresh = 1 ==> prefetch when one or more available
                  * pthresh = 0x1f ==> prefetch if internal cache 31 or less
                  * BEWARE: this seems to work but should be considered first if