From: Viresh Kumar viresh.kumar@linaro.org
[ Upstream commit e0df59de670b48a923246fae1f972317b84b2764 ]
There is a lot of stuff here which can be done outside of the big opp_table_lock, do that. This helps avoiding few circular dependency lockdeps around debugfs and interconnects.
Reported-by: Rob Clark robdclark@gmail.com Reported-by: Dmitry Osipenko digetx@gmail.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/opp/core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 8867bab72e171..088c93dc0085c 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1046,6 +1046,10 @@ static void _opp_table_kref_release(struct kref *kref) struct opp_table *opp_table = container_of(kref, struct opp_table, kref); struct opp_device *opp_dev, *temp;
+ /* Drop the lock as soon as we can */ + list_del(&opp_table->node); + mutex_unlock(&opp_table_lock); + _of_clear_opp_table(opp_table);
/* Release clk */ @@ -1067,10 +1071,7 @@ static void _opp_table_kref_release(struct kref *kref)
mutex_destroy(&opp_table->genpd_virt_dev_lock); mutex_destroy(&opp_table->lock); - list_del(&opp_table->node); kfree(opp_table); - - mutex_unlock(&opp_table_lock); }
void dev_pm_opp_put_opp_table(struct opp_table *opp_table)