diff options
| author | k.konieczny@partner.samsung.com <k.konieczny@partner.samsung.com> | 2019-07-19 17:05:32 +0200 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2019-07-26 09:55:52 +0200 |
| commit | 7f93ff73f7c8c8bfa6be33bcc16470b0b44682aa (patch) | |
| tree | 54780f1971f05b293d4c398e36a1c091b5513c48 /drivers | |
| parent | opp: Don't decrement uninitialized list_kref (diff) | |
| download | linux-7f93ff73f7c8c8bfa6be33bcc16470b0b44682aa.tar.xz linux-7f93ff73f7c8c8bfa6be33bcc16470b0b44682aa.zip | |
opp: core: add regulators enable and disable
Add enable regulators to dev_pm_opp_set_regulators() and disable
regulators to dev_pm_opp_put_regulators(). Even if bootloader
leaves regulators enabled, they should be enabled in kernel in
order to increase the reference count.
Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/opp/core.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 9ff0538ee83a..3b7ffd0234e9 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1626,6 +1626,12 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev, goto free_regulators; } + ret = regulator_enable(reg); + if (ret < 0) { + regulator_put(reg); + goto free_regulators; + } + opp_table->regulators[i] = reg; } @@ -1639,8 +1645,10 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev, return opp_table; free_regulators: - while (i != 0) - regulator_put(opp_table->regulators[--i]); + while (i--) { + regulator_disable(opp_table->regulators[i]); + regulator_put(opp_table->regulators[i]); + } kfree(opp_table->regulators); opp_table->regulators = NULL; @@ -1666,8 +1674,10 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table) /* Make sure there are no concurrent readers while updating opp_table */ WARN_ON(!list_empty(&opp_table->opp_list)); - for (i = opp_table->regulator_count - 1; i >= 0; i--) + for (i = opp_table->regulator_count - 1; i >= 0; i--) { + regulator_disable(opp_table->regulators[i]); regulator_put(opp_table->regulators[i]); + } _free_set_opp_data(opp_table); |