While adding error handling of genpd's ->attach_dev() callback, I realized that
we also had a need to re-structure some of the code which deals with
adding/removing devices to genpd. Especially the APIs, __pm_genpd_add_device()
and pm_genpd_remove_device() deserved some attention.
Patch 1 -> 4, can be considered as more simple cleanups and should not impact
the behavior for current clients using the APIs.
Patch 5, eliminates a mutex for generic_pm_domain_data by re-order the
initialization/cleanup of dev_pm_qos notifiers.
Patch 6, move some code around to fix a potenial memory leakage of a struct
pm_subsys_data.
Patch 7, code restructuring which impacts locking behavior while adding/removing
devices. Should improve code readability and decrease critical regions of
holding locks.
Patch 8, Adds error handling of genpd's ->attach_dev() callback
Ulf Hansson (8):
PM / Domains: Rename __pm_genpd_alloc|free_dev_data()
PM / Domains: Remove reference counting for the generic_pm_domain_data
PM / Domains: Don't allow an existing generic_pm_domain_data
PM / Domains: Don't check for an existing device when adding a new
PM / Domains: Eliminate the mutex for the generic_pm_domain_data
PM / Domains: Free pm_subsys_data in error path in
__pm_genpd_add_device()
PM / Domains: Re-order initialization of generic_pm_domain_data
PM / Domains: Handle errors from genpd's ->attach_dev() callback
drivers/base/power/domain.c | 137 +++++++++++++++++++++-----------------------
include/linux/pm_domain.h | 2 -
2 files changed, 65 insertions(+), 74 deletions(-)
--
1.9.1
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