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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2018-11-22 06:34:00 +0100 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2018-12-14 11:57:43 +0100 |
| commit | 699e21e4170add1c4c954838d94feec2014ee83c (patch) | |
| tree | 349ef2b913680cd918e6f5721ccce22f8b42132f /drivers | |
| parent | PM / Domains: Make genpd performance states orthogonal to the idlestates (diff) | |
| download | linux-699e21e4170add1c4c954838d94feec2014ee83c.tar.xz linux-699e21e4170add1c4c954838d94feec2014ee83c.zip | |
OPP: Improve _find_table_of_opp_np()
Make _find_table_of_opp_np() more efficient by using of_get_parent() to
find the parent OPP table node.
Tested-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/opp/of.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 3740822b4197..7f09ae8fc050 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -114,19 +114,25 @@ static struct device_node *of_parse_required_opp(struct device_node *np, static struct opp_table *_find_table_of_opp_np(struct device_node *opp_np) { struct opp_table *opp_table; - struct dev_pm_opp *opp; + struct device_node *opp_table_np; lockdep_assert_held(&opp_table_lock); + opp_table_np = of_get_parent(opp_np); + if (!opp_table_np) + goto err; + + /* It is safe to put the node now as all we need now is its address */ + of_node_put(opp_table_np); + list_for_each_entry(opp_table, &opp_tables, node) { - opp = _find_opp_of_np(opp_table, opp_np); - if (opp) { - dev_pm_opp_put(opp); + if (opp_table_np == opp_table->np) { _get_opp_table_kref(opp_table); return opp_table; } } +err: return ERR_PTR(-ENODEV); } |