[PATCH] tg3 PXE-related fix

Thanks to Manish Lachwani for isolating the area for this fix, which 
will get checked in soon after some more testing.  Fix originated from 
the Broadcom driver, via Manish's kind help.
Posted mainly in case other netdev'izens with BCM5704 A0 chips are 
running into this.
Patch against 2.4.20-rc[34]'s tg3.c, a.k.a. version 1.2.

diff -Nru a/drivers/net/tg3.c b/drivers/net/tg3.c
--- a/drivers/net/tg3.c Mon Nov 25 18:53:36 2002
+++ b/drivers/net/tg3.c Mon Nov 25 18:53:36 2002
@@ -6182,6 +6182,13 @@
        if ((pci_state_reg & PCISTATE_BUS_32BIT) != 0)
                tp->tg3_flags |= TG3_FLAG_PCI_32BIT;
 
+       /* Chip-specific fixup from Broadcom driver */
+       if ((tp->pci_chip_rev_id == CHIPREV_ID_5704_A0) &&
+           (!(pci_state_reg & PCISTATE_RETRY_SAME_DMA))) {
+               pci_state_reg |= PCISTATE_RETRY_SAME_DMA;
+               pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, 
pci_state_reg);
+       }
+
        /* Force the chip into D0. */
        err = tg3_set_power_state(tp, 0);
        if (err)