On Thu, 2007-01-25 at 16:22 +0000, Russell King wrote: > The zero DMA address is absolutely and totally valid. It might not > correspond with physical address zero on platforms. > > Also, DMA address zero is not the same as NULL.
This isn't actually "DMA address" in that context -- it's the I/O port number at which the controller's BM-DMA control registers reside. But still it can be zero. -- dwmw2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
