[Bug 6426] Working Longhaul driver removed from kernel

[Bug 6426] Working Longhaul driver removed from kernel

[Rafał Bilski]

> http://bugzilla.kernel.org/show_bug.cgi?id=6426
 >
> ------- Additional Comments From davej at codemonkey.org.uk  2006-04-22 10:50 -------
> You got lucky.  It's completely broken (In part due to the quirky hardware
> design of longhaul), and needs significant effort to fix.
> (There needs to be infrastructure work done to quiesce dma from IDE/SCSI during
> speed transitions, otherwise real bad things can happen ranging from lock-ups,
> to disk corruption.)
> 
> It's possible you never hit it because you were using conservative which doesn't
> change the speed very often, however in some cases a single transition is enough
> to hit the bug.
> 

I try to hang my machine. It's imposible with cpufreq. In worst case 
there is 2-10 secs freeze. But only when delta f is big (example 
532<->997). Only way to hang machine is "modprobe viafb" with hw accel 
enabled.


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[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426


protasnb@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |protasnb@gmail.com




------- Comment #3 from protasnb@gmail.com  2008-03-11 18:18 -------
What is the status of longhaul now? There is another bug (5507) where the user
claims that driver does work, but he doesn't see any power savings. Is the
driver functional?
Thanks.


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[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426

rafalbilski@interia.pl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|DEFERRED                    |CLOSED



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[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426

bugzilla.kernel.org@kleinmanns.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla.kernel.org@kleinman
                   |                            |ns.com



------- You are receiving this mail because: -------
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[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426





------- Additional Comments From rafalbilski@interia.pl  2006-04-30 12:40 -------
Created an attachment (id=8002)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=8002&action=view)
Same delay code for older, pre "Powersaver", and "Powersaver" CPU's


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[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426

davej@codemonkey.org.uk changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |DEFERRED
         Resolution|                            |WILL_FIX_LATER



------- Additional Comments From davej@codemonkey.org.uk  2006-04-22 10:50 -------
You got lucky.  It's completely broken (In part due to the quirky hardware
design of longhaul), and needs significant effort to fix.
(There needs to be infrastructure work done to quiesce dma from IDE/SCSI during
speed transitions, otherwise real bad things can happen ranging from lock-ups,
to disk corruption.)

It's possible you never hit it because you were using conservative which doesn't
change the speed very often, however in some cases a single transition is enough
to hit the bug.

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

[Bug 6426] Working Longhaul driver removed from kernel

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=6426

bunk@stusta.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bunk@stusta.de
              Owner|drivers_other@kernel-       |cpufreq@www.linux.org.uk
                   |bugs.osdl.org               |
          Component|Other                       |cpufreq
           Category|Drivers                     |Power Management



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