In-Reply-To: <[email protected]>
On Thu, 6 Jul 2006 13:34:14 -0700, Linus Torvalds wrote:
> > So I _think_ that we should change the "=m" to the much more correct "+m"
> > at the same time (or before - it's really a bug-fix regardless) as
> > removing the "volatile".
>
> Here's a first cut (UNTESTED!) for x86. I didn't check any other
> architectures, I bet they have similar problems.
> #define __raw_spin_unlock_string \
> "movb $1,%0" \
> - :"=m" (lock->slock) : : "memory"
> + :"+m" (lock->slock) : : "memory"
This really is just an overwrite of whatever is there. OTOH I can't see
how this change could hurt anything..
--
Chuck
"You can't read a newspaper if you can't read." --George W. Bush
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