On Tue, Aug 08 2006, Jiri Slaby wrote: > Rafael J. Wysocki wrote: > >On Monday 07 August 2006 18:23, Jason Lunz wrote: > >>In gmane.linux.kernel, you wrote: > >>>>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc3/2.6.18-rc3-mm2/ > >>>I tried it and guess what :)... swsusp doesn't work :@. > >>> > >>>This time I was able to dump process states with sysrq-t: > >>>http://www.fi.muni.cz/~xslaby/sklad/ide2.gif > >>> > >>>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? > >>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc3/2.6.18-rc3-mm2/broken-out/ide-reprogram-disk-pio-timings-on-resume.patch > >> > >>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. The ide changes are far more likely, it's probably missing a completion. > Where the blk_end_sync_rq should be called from (why is not called at > all)? It's called from ->end_io() in end_that_request_last(). -- Jens Axboe
