diff options
| author | Liang He <windhl@126.com> | 2022-07-18 16:36:32 +0300 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2022-07-19 08:37:02 +0300 |
| commit | 3466ea2cd6b66e4647a9af2381c0d0cd3d579354 (patch) | |
| tree | 1e673682efbb6b56767bc25de157eea3553f18b4 /drivers/opp/of.c | |
| parent | ce736cf71b5ab8ad9b741dc7a4a07e41c27d1421 (diff) | |
| download | linux-3466ea2cd6b66e4647a9af2381c0d0cd3d579354.tar.xz | |
OPP: Don't drop opp->np reference while it is still in use
The struct dev_pm_opp contains a reference of the DT node, opp->np,
throughout its lifetime. We should increase the refcount for the same
from _opp_add_static_v2(), and drop it while removing the OPP finally.
Signed-off-by: Liang He <windhl@126.com>
[ Viresh: Updated subject / commit log, create _of_clear_opp() and drop
reference from it]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp/of.c')
| -rw-r--r-- | drivers/opp/of.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/opp/of.c b/drivers/opp/of.c index e4002b075422..7fa8263e38cb 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -254,8 +254,8 @@ void _of_clear_opp_table(struct opp_table *opp_table) * Release all resources previously acquired with a call to * _of_opp_alloc_required_opps(). */ -void _of_opp_free_required_opps(struct opp_table *opp_table, - struct dev_pm_opp *opp) +static void _of_opp_free_required_opps(struct opp_table *opp_table, + struct dev_pm_opp *opp) { struct dev_pm_opp **required_opps = opp->required_opps; int i; @@ -275,6 +275,12 @@ void _of_opp_free_required_opps(struct opp_table *opp_table, kfree(required_opps); } +void _of_clear_opp(struct opp_table *opp_table, struct dev_pm_opp *opp) +{ + _of_opp_free_required_opps(opp_table, opp); + of_node_put(opp->np); +} + /* Populate all required OPPs which are part of "required-opps" list */ static int _of_opp_alloc_required_opps(struct opp_table *opp_table, struct dev_pm_opp *opp) @@ -938,7 +944,7 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table, new_opp->turbo = of_property_read_bool(np, "turbo-mode"); - new_opp->np = np; + new_opp->np = of_node_get(np); new_opp->dynamic = false; new_opp->available = true; |