From mboxrd@z Thu Jan 1 00:00:00 1970 From: viresh.kumar@linaro.org (Viresh Kumar) Date: Wed, 29 May 2013 13:55:26 +0530 Subject: [linux-pm] ARM hibernation / suspend-to-disk In-Reply-To: <20130529081005.GA25561@hal> References: <20130529081005.GA25561@hal> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 29 May 2013 13:40, Jan Glauber wrote: > what's the status of suspend-to-disk on ARM? The most recent discussion I > found is: > http://lists.linuxfoundation.org/pipermail/linux-pm/2012-November/034997.html > > with no replies at all. Is anyone still working on that? Anyone got it running? > > I tried the patch above (on top of LTS 3.4) and got stuck forever, the last > thing on the console was: > > root at omap5:/sys/power# echo disk > state > [ 2015.641540] PM: Syncing filesystems ... done. > [ 2015.666870] PM: Preallocating image memory... done (allocated 16957 pages) > [ 2016.062011] PM: Allocated 67828 kbytes in 0.38 seconds (178.49 MB/s) > > Any hint how to debug that? I know it is still broken and I had discussion with Kevin in past regarding that. See below. On 13 March 2013 22:57, Kevin Hilman wrote: > Viresh Kumar writes: > >> Hi Guys, >> >> As discussed during connect about "HIBERNATION support for ARM platforms", >> this is my last mail on this, almost a year back, where i tried my best to get >> relevant answer from Amit. >> >> Probably he missed all my mails then, but this might be a good starting point >> for this discussion as i did some testing on hibernation earlier. >> >> https://lkml.org/lkml/2012/2/6/8 > > I think the reason that ARM sub-arches are not setting things up is > because ARM has never supported hibernation in mainline. > > The most recent patch to add basic support[1] references the various > discussions on what is needed and still missing. > > Kevin > > [1] http://marc.info/?l=linux-omap&m=135292458209355&w=2