smsc911x.c driver and SMP (was Re: Kernel related (?) user space crash at ARM11 MPCore)

[Catalin Marinas]

(sorry for the repost Antti, the message was sent to the old list and
didn't like the "was:" stuff in the subject and the reply headers)

On Thu, 2009-08-13 at 00:05 +0300, Antti P Miettinen wrote:
> BTW - the smsc911x does not work for me in the
> recent kernels. I had to change back to smc911x. Otherwise my boot
> from NFS root hangs pretty early. I think it used to be the other way
> around in some kernel version.

I added the commit below to my tree and the new driver now seems to work
fine with ARM11MPCore systems:

http://www.linux-arm.org/git?p=linux-2.6.git;a=commitdiff;h=246a6cc1f1fa52e96a08f327337c5616eb634825

I'm waiting for the SMSC guys to look into this issue. It may just be
that some of the read-after-write or read-after-read timing constraints
are violated when more than one CPU tries to access the Ethernet chip.

-- 
Catalin