From e0df59de670b48a923246fae1f972317b84b2764 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 22 Oct 2020 12:26:08 +0530 Subject: opp: Reduce the size of critical section in _opp_table_kref_release() 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 Reported-by: Dmitry Osipenko Signed-off-by: Viresh Kumar --- drivers/opp/core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/opp') diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 4ac4e7ce6b8b..0e0a5269dc82 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1181,6 +1181,10 @@ static void _opp_table_kref_release(struct kref *kref) struct opp_device *opp_dev, *temp; int i; + /* 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 */ @@ -1208,10 +1212,7 @@ 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) -- cgit v1.2.3