Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] SATA / AHCI: Do not play with the link PM during suspend to RAM | Date | Mon, 23 Aug 2010 20:58:33 +0200 |
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On Monday, August 23, 2010, Tejun Heo wrote: > Hello, sorry about the delay. > > On 08/19/2010 06:23 PM, Stephan Diestelhorst wrote: > > It says "max_performance", I have not touched anyhting. So it has been > > like that all the time. Would this explain why your patch did not show > > the debug printout? > > Hmm... okay. Yeah, if you haven't been using IPM at all, there won't > be any debug messages but at the same time the posted patch should > have had the same effect as Rafael's patch as IPM path isn't traveled > at all. Can you please check the followings? > > * You're actually running the correct patched kernel and modules. It > probably is a good idea to add a printk message. ie. Apply the > patch and add a printk() in ata_host_request_pm() in libata-core.c > and make sure the debug messages appears. > > * Rafael's patch actually fixes the problem. If you haven't been > using IPM at all, Rafael's patch and mine should behave exactly the > same (ie. no IPM operation at all during suspend/resume). It could > be that you're seeing a different issue. > > Rafael, can you please test my patch and see how your case behaves?
This one: http://lkml.org/lkml/2010/8/5/328 ?
Rafael
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