From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 102741] pata_hpt37x driver refuses to operate with Adaptec
1200A at UDMA/100
Date: Wed, 12 Aug 2015 20:48:39 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=102741
--- Comment #3 from Sergei Shtylyov ---
(In reply to Andreas E from comment #2)
> NAH!!! I can't believe it. This thing can do UDMA/100
Well, I wouldn't call UDMA/100 with 66 MHz clock real UDMA/100.
> but it was limited artificially to /66.
"Shit happens". :-)
> In any case, I think the driver messages should *inform* the user about this
> being not their HDD(s) at fault, but forced to this speed by the driver
> itself. Because every user would initially think that it's their fault, not
> the driver's.
Makes sense.
> Is there any way I can force it to operate at UDMA/100?
> Some #define, anything?
With the IDE driver, there was a #define but that's not the case with the
libata one. Thank Alan Cox for that. :-)
However, it shouldn't be hard to do, just comment out the following lines:
if (clock_slot < 2 && ppi[0] == &info_hpt370)
ppi[0] = &info_hpt370_33;
if (clock_slot < 2 && ppi[0] == &info_hpt370a)
ppi[0] = &info_hpt370a_33;
[the rest skipped]
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