Re: [PATCH 3/4] myri10ge - Driver core

From: Brice Goglin
Date: Thu May 18 2006 - 19:38:09 EST

Roland Dreier wrote:
> Still some suspicious uses of volatile here.
> For example:
>> +struct myri10ge_priv {
> ...
>> + volatile u8 __iomem *sram;
> as far as I can see this is always used with proper __iomem accessors,
> often with casts to strip the volatile anyway. So why is volatile needed?
> I would suggest an audit of all uses of volatile in the driver, since
> "volatile" in drivers really should be read "there's probably a bug
> here, and if not something very tricky is going on." If there are any
> valid uses of volatile then a comment should explain why, so that
> future reviewers don't have to try and puzzle out which of the
> two possible translations of volatile is correct.

You are right, we audited the code and it looks like we don't need any


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