Re: [PATCH] drivers/isdn/gigaset: new M101 driver

[Tilman Schmidt <tilman@imap.cc>]

Andrew Morton schrieb:
> On Mon, 05 Feb 2007 02:42:09 +0100 Tilman Schmidt <tilman@imap.cc> wrote:
> 
>> It's a pointer. Are reads and writes of pointer sized objects
>> guaranteed to be atomic on every platform?
> 
> Yup - we make the same assumption about longs in various places.
> 
> It's a bit strange to read a pointer which can be changing at the
> same time.  Because the local copy will no longer represent the
> thing which it was just copied from.

It's not that bad. The only possible concurrent change is from NULL
to non-NULL. Fearing an inconsistent read in that event was too
paranoid apparently.

Thanks for all your suggestions. I'll prepare a new patch based on
them.

-- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
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