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SubjectRe: [PATCH v3 2/5] opp: core: add regulators enable and disable
On 19-07-19, 17:05, k.konieczny@partner.samsung.com wrote:
> 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>
> ---
> Changes in v3:
> - corrected error path in enable
> - improved commit message
> Changes in v2:
> - move regulator enable and disable into loop
> ---
> drivers/opp/core.c | 16 +++++++++++++---
> 1 file changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index 0e7703fe733f..a8a480cdabab 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -1570,6 +1570,12 @@ 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;
> }
>
> @@ -1583,8 +1589,10 @@ 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;
> @@ -1610,8 +1618,10 @@ 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);

Applied. Thanks.

--
viresh

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