[2.6.0-test4] IDE power management
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Date: 08/29/03
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Date: Fri, 29 Aug 2003 19:49:19 +0100 To: linux-kernel@vger.kernel.org
Since 2.6.0-test4, and in -mmX IDE power management no longer works for
me. Using Fn+F12 to initiate APM suspend-to-disk, the suspend starts as
normal, then the disk spins down, which is wrong, because the disk spins
up again to perform the actual save-to-disk operation.
The laptop is a Sony Vaio 333MHz celeron, with a PIIX4 IDE controller.
This used to work fine in all previous kernels.
I get the following log messages:
hda: start_power_step(step: 0)
hda: start_power_step(step: 1)
hda: complete_power_step(step: 1, stat: 50, err:0)
hda: completing PM request, suspend
hda: a request made it's way while we are power managing
--- power down/up occurs here
hda: Wakeup request inited, waiting for !BSY...
hda: start_power_step(step: 1000)
hda: completing PM request, resume
...
hda: lost interrupt
The hard disk won't allow any accesses any more.
APM suspend to RAM doesn't work properly on this machine, so I haven't
tested that.
Charlie
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