The flush threshold in the MAC chip should be increased.
Found while reviewing vendor version of sk98lin driver.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -1780,7 +1780,12 @@ static void yukon_mac_init(struct skge_h
reg &= ~GMF_RX_F_FL_ON;
skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
- skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
+ /*
+ * because Pause Packet Truncation in GMAC is not working
+ * we have to increase the Flush Threshold to 64 bytes
+ * in order to flush pause packets in Rx FIFO on Yukon-1
+ */
+ skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
/* Configure Tx MAC FIFO */
skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
-
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