On 28 October 2012 20:52, Linus Walleij <linus.wall...@linaro.org> wrote: > On Sat, Oct 27, 2012 at 11:46 PM, Mark Brown > <broo...@opensource.wolfsonmicro.com> wrote: >> On Fri, Oct 05, 2012 at 09:43:32AM +0200, Ulf Hansson wrote: >> >>> To be able to deactivate resourses in suspend, the resourses must >>> first be surely active. This is done with a pm_runtime_get_sync. >>> Once the resourses are restored to active state again in resume, >>> the runtime pm usage count can be decreased with a pm_runtime_put. >> >> The PM core will ensure devices are runtime resumed before we enter >> suspend precisely due to this sort of issue. > > I asked the very same question to Ulf (in speech, sorry > so you couldn't see it...) > > So I guess we are talking about drivers/base/main.c > > in device_prepare() > pm_runtime_get_noresume() is called
This will increase the "usage_counter" for the device. It will not "runtime_resume" the device, though it will prevent it from being "runtime_suspended". > and in device_complete() > pm_runtime_put_sync() is called. > > Both put into current for in > commit 88d26136a256576e444db312179e17af6dd0ea87 > on sep 19th. > > Yes it seems like it will do the job. > > Ulf can you comment on this... > > Yours, > Linus Walleij Kind regards Ulf Hansson ------------------------------------------------------------------------------ WINDOWS 8 is here. Millions of people. Your app in 30 days. Visit The Windows 8 Center at Sourceforge for all your go to resources. http://windows8center.sourceforge.net/ join-generation-app-and-make-money-coding-fast/ _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
