Re: [PATCH v3] parisc: Fix crash due alternative coding for NP iopdir_fdc bit

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Hi,

On Tue, May 28, 2019 at 07:24:29PM +0200, Rolf Eike Beer wrote:
> Am Dienstag, 28. Mai 2019, 19:06:48 CEST schrieb John David Anglin:
> > On 2019-05-28 11:38 a.m., Sven Schnelle wrote:
> > > Interesting. Now that you mention it i see that my C3750 reports the same.
> > > Google returned the following page
> > > https://support.hpe.com/hpsc/swd/public/detail?swItemId=PF_CCJ70020
> > > 
> > > Which is 2.0, and only mentions "C3650/C3700/C3750/J6700/J6750 firmware"
> > > So maybe these machines have NP set, and machines "below" (like C3600)
> > > don't have it set.
> > > 
> > > I wonder what happens if you try to flash a 5.0 firmware to such a box.
> > 
> > From what I see, the "C3650/C3700/C3750/J6700/J6750" and "HP 9000 Model
> > B1000/C3000/J5000/J7000" use different firmware.
> 
> Which makes sense as the former have use a 8600 CPU, while the latter have 
> 8700 ones.

Exactly. And as:

a) All C3600 PDC versions clear the NP bit
b) All C37XX/J5000 PDC version set the NP bit

i don't think there's some bug in the PDC. I would guess that the patch Carlo
reported to fix issues is just hiding the real problem. Would be interesting
to run Carlo's Test on a C37XX.

Sven



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