Re: [GIT] Sparc

From: Linus Torvalds
Date: Thu Nov 05 2015 - 19:43:56 EST

On Thu, Nov 5, 2015 at 1:39 PM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> 5) Fix iommu-common code so it doesn't emit rediculous warnings
> on some architectures, particularly ARM.

Heh. So looking at that patch, I can't but help to react that this:

#define IOMMU_ERROR_CODE (~(unsigned long) 0)

is still pretty ridiculous. Maybe just (-1ul), or for those people
who don't understand C unsigned long arithmetic and think that a
negative unsigned long looks odd, (~0ul)?

Not that this *matters*, but it's a bit odd to have to cast constants
to perfectly regular C types.

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