Re: [PATCH 0/3] Add OMAP hardware spinlock misc driver

[Russell King - ARM Linux]

On Tue, Oct 19, 2010 at 04:31:30PM -0700, Daniel Walker wrote:
> On Mon, 2010-10-18 at 09:44 +0200, Ohad Ben-Cohen wrote:
> > OMAP4 introduces a Spinlock hardware module, which provides hardware
> > assistance for synchronization and mutual exclusion between heterogeneous
> > processors and those not operating under a single, shared operating system
> > (e.g. OMAP4 has dual Cortex-A9, dual Cortex-M3 and a C64x+ DSP).
> > 
> > The intention of this hardware module is to allow remote processors,
> > that have no alternative mechanism to accomplish synchronization and mutual
> > exclusion operations, to share resources (such as memory and/or any other
> > hardware resource).
> > 
> > This patchset adds a new misc driver for this OMAP hwspinlock module.
> 
> Does this code interface with some hardware unit (other than the other
> processors) to accomplish this locking ?
> 
> The reason I ask is because MSM has similar code, and from what I can
> tell the MSM version has some structures in memory but that's all. It
> just operates on the structures in memory.
> 
> It might be worth looking over the two implementation so we aren't both
> remaking the wheel.

Ohad's message to which you replied had:

To: linux-omap@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx,
        linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Ohad Ben-Cohen <ohad@xxxxxxxxxx>, Hari Kanigeri <h-kanigeri2@xxxxxx>,
        Benoit Cousson <b-cousson@xxxxxx>, Tony Lindgren <tony@xxxxxxxxxxx>,
        Greg KH <greg@xxxxxxxxx>, Grant Likely <grant.likely@xxxxxxxxxxxx>,
        akpm@xxxxxxxxxxxxxxxxxxxx, Suman Anna <s-anna@xxxxxx>

Yours has:

To: Ohad Ben-Cohen <ohad@xxxxxxxxxx>
Cc: Hari Kanigeri <h-kanigeri2@xxxxxx>, Benoit Cousson <b-cousson@xxxxxx>,
        Tony Lindgren <tony@xxxxxxxxxxx>, Greg KH <greg@xxxxxxxxx>,
        linux-kernel@xxxxxxxxxxxxxxx,
        Grant Likely <grant.likely@xxxxxxxxxxxx>, mattw@xxxxxxxxxxxxxx,
        akpm@xxxxxxxxxxxxxxxxxxxx, Suman Anna <s-anna@xxxxxx>,
        mattw@xxxxxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx

which includes an invalid address "mattw@xxxxxxxxxxxxxxxxxxx".  Is there
a reason why you're excluding the linux-omap list from your message and
subsequent discussion?
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