[alsa-devel] [PATCH] Modify mpc5200 AC97 driver to use V9 of spin_event_timeout()

Grant Likely grant.likely at secretlab.ca
Wed May 27 05:49:32 CEST 2009

On Tue, May 26, 2009 at 9:12 PM, Timur Tabi <timur at freescale.com> wrote:
> On Tue, May 26, 2009 at 8:01 PM, Jon Smirl <jonsmirl at gmail.com> wrote:
>> Then why did you need to make your routine that calls cpu_relax()?
> That gets called only if delay == 0.  udelay(0) is a no-op, so if the
> caller specifies no delay, then I need to manually call cpu_relax().
>> I don't know what goes on in the guts of HMT_low() and cpu_relax(),
>> when you guys decide which one I should use let me know and I can
>> adjust the patch.
> Grant, I don't see any reason why "udelay(50)" is unacceptable.

It's not.  See my last email.


Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

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