[PATCH] sundance: remove TxStartThresh and RxEarlyThresh

For patent issue need to remove TxStartThresh and RxEarlyThresh.  This patent
is cut-through patent.  If use this function, Tx will start to transmit after
few data be move in to Tx FIFO.  We are not allow to use those function in
DFE530/DFE550/DFE580/DL10050/IP100/IP100A.  It will decrease a little
performance.

Signed-off-by: Jesse Huang <jesse@icplus.com.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index 41c503d8bac4..be1faa020392 100644
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -264,8 +264,6 @@ enum alta_offsets {
         ASICCtrl = 0x30,
         EEData = 0x34,
         EECtrl = 0x36,
-        TxStartThresh = 0x3c,
-        RxEarlyThresh = 0x3e,
         FlashAddr = 0x40,
         FlashData = 0x44,
         TxStatus = 0x46,
@@ -1111,6 +1109,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
         int tx_cnt;
         int tx_status;
         int handled = 0;
+        int i;
 
 
         do {
@@ -1153,17 +1152,14 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
                                                 np->stats.tx_fifo_errors++;
                                         if (tx_status & 0x02)
                                                 np->stats.tx_window_errors++;
+
                                         /*
                                         ** This reset has been verified on
                                         ** DFE-580TX boards ! phdm@macqel.be.
                                         */
                                         if (tx_status & 0x10) { /* TxUnderrun */
-                                                unsigned short txthreshold;
-
-                                                txthreshold = ioread16 (ioaddr + TxStartThresh);
                                                 /* Restart Tx FIFO and transmitter */
                                                 sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
-                                                iowrite16 (txthreshold, ioaddr + TxStartThresh);
                                                 /* No need to reset the Tx pointer here */
                                         }
                                         /* Restart the Tx. */