> No, the ability to address 32 bits is property of an ISA bridge, not
> of any particular ISA card or device. Most alphas do have 32-bit ISA DMA.
This is wrong for bus master DMA. tms380tr.c sets DMA_MODE_CASCADE and the
addressing is done by the ISA card. As the card only has 24bit, the DMA is
limited to 24 bits.
Your patch would only cause a machine check, but DMA still wouldn't work.
Cheers,
--jochen
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/