[PATCH 6/8 2.4.26-bk1] pcnet32 transmit performance fix

[Don Fry <brazilnut@xxxxxxxxxx>]

When the pcnet32 adapter is installed in a system with long PCI latency
and the read burst bit is not set, performance on transmission is very
low (under 20Mbit on a 100Mbit link).  This will make sure that read and
write bursts are enabled.  Tested on ia32.

--- linux-2.4.26-bk1/drivers/net/led.pcnet32.c  Tue Apr 20 12:48:10 2004
+++ linux-2.4.26-bk1/drivers/net/pcnet32.c      Tue Apr 20 12:48:13 2004
@@ -1021,10 +1021,11 @@
      * starting until the packet is loaded. Strike one for reliability, lose
      * one for latency - although on PCI this isnt a big loss. Older chips
      * have FIFO's smaller than a packet, so you can't do this.
+     * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
      */
 
     if (fset) {
-       a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0800));
+       a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
        a->write_csr(ioaddr, 80, (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
        dxsuflo = 1;
        ltint = 1;

-- 
Don Fry
brazilnut@xxxxxxxxxx