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SubjectRe: swsusp regression [Was: 2.6.18-rc3-mm2]
Rafael J. Wysocki wrote:
> On Monday 07 August 2006 18:23, Jason Lunz wrote:
>> In gmane.linux.kernel, you wrote:
>>> I tried it and guess what :)... swsusp doesn't work :@.
>>> This time I was able to dump process states with sysrq-t:
>>> My guess is ide2/2.0 dies (hpt370 driver), since last thing kernel prints is
>>> suspending device 2.0
>> Does it go away if you revert this?
>> That should only affect resume, not suspend, but it does mess around
>> with ide power management. Is this maybe happening on the *second*
>> suspend?
>>> -hdc: ATAPI 63X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
>>> +hdc: ATAPI CD-ROM drive, 0kB Cache, UDMA(33)
>> This looks suspicious. -mm does have several ide-fix-hpt3xx patches.
> I found that git-block.patch broke the suspend for me. Still have no idea
> what's up with it.

I suspect elevator changes. The wait_for_completion is not woken in ide-io by
ll_rw_blk. But I don't understand block layer too much. Where the
blk_end_sync_rq should be called from (why is not called at all)?

<a href="">Jiri Slaby</a>
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
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