commit 6e532cfe49b6e961e1260642a44959b645e9ab54
author Stephen Hemminger <shemminger@osdl.org> Mon Oct 09 15:49:27 2006 -0700
committer Jeff Garzik <jeff@garzik.org> Wed Oct 11 04:07:45 2006 -0400
tree 4e04ee6db5cef2fc0ec9f48e074c2077f77b54fb
parent 7bd656d12119708b37414bf909ab2995473da818

[PATCH] sky2: set lower pause threshold to prevent overrun

Adjust the pause threshold on slower systems to keep from getting overrun.
Since FIFO is 2K bytes, don't send XON pause until there is space for a full
frame.

Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/sky2.c

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 1f91f30..c10e7f5 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -683,7 +683,7 @@
 	sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
 
 	if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
-		sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
+		sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 512/8);
 		sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
 		if (hw->dev[port]->mtu > ETH_DATA_LEN) {
 			/* set Tx GMAC FIFO Almost Empty Threshold */