Changes in v2: -Added some acks. -Updated commit messages. -Included a wider audience of the patchset. V1 was lacking SoC maintainers. Here are link to the first patchset, were some discussion started. http://marc.info/?l=linux-pm&m=141208104729597&w=2 When there are more than one device in a PM domain these will obviously be probed at different times. Depending on timing and the implemented support for runtime PM in a driver/subsystem, genpd may be advised to power off a PM domain after a successful probe sequence. Ideally we should have relied on the driver/subsystem, through runtime PM, to bring their device's PM domain into powered state prior doing probing if such requirement exist. Since this is not a common practice by drivers/subsystems, enforcing such a change doesn't seem viable. Instead, let's improve the situation, by preventing genpd from powering off any of the PM domains until late_init. At that point genpd already tries to power off unused PM domains, so it seems like a decent match. Cases which can't be covered within the window of until late_init needs to be adressed separately and likely through a more common long term solution. Ulf Hansson (4): PM / Domains: Remove pm_genpd_dev_need_restore() API ARM: exynos: Ensure PM domains are powered at initialization PM / Domains: Expect PM domains being powered at initialization PM / Domains: Enforce PM domains to stay powered during boot arch/arm/mach-exynos/pm_domains.c | 7 ++++--- arch/arm/mach-s3c64xx/pm.c | 4 ++-- arch/arm/mach-shmobile/pm-r8a7779.c | 2 +- arch/arm/mach-shmobile/pm-rmobile.c | 2 +- drivers/base/power/domain.c | 42 ++++++++++++++++--------------------- include/linux/pm_domain.h | 7 +++---- 6 files changed, 29 insertions(+), 35 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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