On Wed, Oct 15, 2008 at 4:38 PM, Alan Cox [off-list ref] wrote:

On Wed, Oct 15, 2008 at 10:23:41AM +0800, gyang wrote:

quoted

We are making a SMP like patch to blackfin, cpu_relax() is replaced by a
data cache flush function which will count it to a per-cpu counter.
If this serial function is called too early, the per-cpu data area have
not been initialized, this call will cause crash.
So we'd like to use barrier() instead of cpu_relax().

Can you split that out as a separate change and include the explanation in
the patch then.

Thanks
Alan

I'll handle this and will resend the whole blackfin serial driver
patches again as well as Sonic updates some bug fixing recently.

Thanks
-Bryan