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SubjectRe: AMD PCSCSI (AM53c974) driver bug in 2.2.x in SMP but not single CPU mode
On Fri, Apr 09, 1999 at 04:36:45PM -0700, David A. Ranch wrote:
> I have confirmed a problem with the AMD PC-SCSI driver hanging in
> the 2.2.x kernels when compiled in SMP mode but -NOT- in non-SMP mode.
> It should also be noted that a 2.0.36 kernel with SMP support works
> fine.

I guess, nobody really cared for the AM53C974 driver using spinlocks
correctly. So, it's not SMP safe. In 2.0.36, there was a global kernel lock,
so the driver's authors didn't need to be SMP aware.

Please try the tmscsim (Tekram DC390/Generic AM53C974) driver and tell me
your results. I myself am using a SMP system with this driver.

Reagrds,
--
Dipl.Phys. Kurt Garloff <kurt@garloff.de> [Wuppertal, FRG]
Plasma physics, high perf. computing [Linux-ix86,-axp, DUX]
PGP key: see mailheader / key servers [Linux SCSI driver: DC390]
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