Re: [PATCH 12/21] staging: brcm80211: use __BIG_ENDIAN macro in dma.c

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Hi Arend,

On 10 June 2011 11:52, Arend van Spriel <arend@xxxxxxxxxxxx> wrote:
> Hi Jonas,
>
> You are right as with previous mips related patches. Consider this a first
> step which does not change functionality but aims to use the proper linux
> provided macros instead of our own incarnations.

Actually as far as I can tell this changes (non-)functionality: With
the broken big endiness check the driver probably just doesn't work
properly on MIPS BE systems, because some endianess conversion is
missing*. With the endianess check fixed, the special handling for the
Broadcom MIPS get's enabled, potentially crashing the system (or
changing random registers), thus making it *more* broken for non BMIPS
systems. Therefore I'd rather consider this a regression. Especially
since (AFAIK) the BMIPS systems that can take advantage of this aren't
supported in Linux (yet).

If it were just making things less efficient, I wouldn't be
complaining (at least not that much ;-). If you can say that this is a
code path that isn't taken anyway, then my point is moot (for now). I
don't know the driver enough to tell that.

Jonas

*assuming brcm80211 depends on this on BE systems and it isn't just an
optimization
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