[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>

diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index 41c503d8bac43d39b5591d16a6c2a2e325daf440..be1faa02039216e61f19da0d7ef82732d77118a2 100644 (file)
--- 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. */