Re: DMA mapping (was Re: [PATCH] cciss 2.6; replaces DMA masks with kernel defines)

Lee Revell
2005-06-10T23:19:22Z

On Fri, 2005-06-10 at 22:30 +0100, Matthew Wilcox wrote:
> On Fri, Jun 10, 2005 at 05:17:32PM -0400, Lee Revell wrote:
> > OK, this covers the drivers I know. I didn't make any attempt to check
> > them all.
>
> I know of two others ...
>
> sym2 has:
> #define DMA_DAC_MASK 0x000000ffffffffffULL /* 40-bit */
>
> and aic7xxx has:
> const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
>
> Would you mind respinning your patch to include these?
>

I'm grepping the drivers, and what a mess. This will be a nice cleanup.

Why would someone use 0xFFFFffff?

Lee