diff options
| -rw-r--r-- | drivers/clk/clk.c | 19 | ||||
| -rw-r--r-- | include/linux/clk.h | 12 |
2 files changed, 31 insertions, 0 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 2253c154a824..a3bc7fb90d0f 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -939,6 +939,25 @@ int clk_rate_exclusive_get(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_rate_exclusive_get); +static void devm_clk_rate_exclusive_put(void *data) +{ + struct clk *clk = data; + + clk_rate_exclusive_put(clk); +} + +int devm_clk_rate_exclusive_get(struct device *dev, struct clk *clk) +{ + int ret; + + ret = clk_rate_exclusive_get(clk); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, devm_clk_rate_exclusive_put, clk); +} +EXPORT_SYMBOL_GPL(devm_clk_rate_exclusive_get); + static void clk_core_unprepare(struct clk_core *core) { lockdep_assert_held(&prepare_lock); diff --git a/include/linux/clk.h b/include/linux/clk.h index 06f1b292f8a0..24c49b01c25d 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -202,6 +202,18 @@ bool clk_is_match(const struct clk *p, const struct clk *q); int clk_rate_exclusive_get(struct clk *clk); /** + * devm_clk_rate_exclusive_get - devm variant of clk_rate_exclusive_get + * @dev: device the exclusivity is bound to + * @clk: clock source + * + * Calls clk_rate_exclusive_get() on @clk and registers a devm cleanup handler + * on @dev to call clk_rate_exclusive_put(). + * + * Must not be called from within atomic context. + */ +int devm_clk_rate_exclusive_get(struct device *dev, struct clk *clk); + +/** * clk_rate_exclusive_put - release exclusivity over the rate control of a * producer * @clk: clock source |