diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 95b80aeb8c9d..55e62bac0fb4 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -591,6 +591,13 @@ static void clk_core_unprepare(struct clk_core *core) clk_core_unprepare(core->parent); } +static void clk_core_unprepare_lock(struct clk_core *core) +{ + clk_prepare_lock(); + clk_core_unprepare(core); + clk_prepare_unlock(); +} + /** * clk_unprepare - undo preparation of a clock source * @clk: the clk being unprepared @@ -607,9 +614,7 @@ void clk_unprepare(struct clk *clk) if (IS_ERR_OR_NULL(clk)) return; - clk_prepare_lock(); - clk_core_unprepare(clk->core); - clk_prepare_unlock(); + clk_core_unprepare_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_unprepare); @@ -645,6 +650,17 @@ static int clk_core_prepare(struct clk_core *core) return 0; } +static int clk_core_prepare_lock(struct clk_core *core) +{ + int ret; + + clk_prepare_lock(); + ret = clk_core_prepare(core); + clk_prepare_unlock(); + + return ret; +} + /** * clk_prepare - prepare a clock source * @clk: the clk being prepared @@ -659,16 +675,10 @@ static int clk_core_prepare(struct clk_core *core) */ int clk_prepare(struct clk *clk) { - int ret; - if (!clk) return 0; - clk_prepare_lock(); - ret = clk_core_prepare(clk->core); - clk_prepare_unlock(); - - return ret; + return clk_core_prepare_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_prepare); @@ -698,6 +708,15 @@ static void clk_core_disable(struct clk_core *core) clk_core_disable(core->parent); } +static void clk_core_disable_lock(struct clk_core *core) +{ + unsigned long flags; + + flags = clk_enable_lock(); + clk_core_disable(core); + clk_enable_unlock(flags); +} + /** * clk_disable - gate a clock * @clk: the clk being gated @@ -712,14 +731,10 @@ static void clk_core_disable(struct clk_core *core) */ void clk_disable(struct clk *clk) { - unsigned long flags; - if (IS_ERR_OR_NULL(clk)) return; - flags = clk_enable_lock(); - clk_core_disable(clk->core); - clk_enable_unlock(flags); + clk_core_disable_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_disable); @@ -758,6 +773,18 @@ static int clk_core_enable(struct clk_core *core) return 0; } +static int clk_core_enable_lock(struct clk_core *core) +{ + unsigned long flags; + int ret; + + flags = clk_enable_lock(); + ret = clk_core_enable(core); + clk_enable_unlock(flags); + + return ret; +} + /** * clk_enable - ungate a clock * @clk: the clk being ungated @@ -773,19 +800,33 @@ static int clk_core_enable(struct clk_core *core) */ int clk_enable(struct clk *clk) { - unsigned long flags; - int ret; - if (!clk) return 0; - flags = clk_enable_lock(); - ret = clk_core_enable(clk->core); - clk_enable_unlock(flags); + return clk_core_enable_lock(clk->core); +} +EXPORT_SYMBOL_GPL(clk_enable); + +static int clk_core_prepare_enable(struct clk_core *core) +{ + int ret; + + ret = clk_core_prepare_lock(core); + if (ret) + return ret; + + ret = clk_core_enable_lock(core); + if (ret) + clk_core_unprepare_lock(core); return ret; } -EXPORT_SYMBOL_GPL(clk_enable); + +static void clk_core_disable_unprepare(struct clk_core *core) +{ + clk_core_disable_lock(core); + clk_core_unprepare_lock(core); +} static int clk_core_round_rate_nolock(struct clk_core *core, struct clk_rate_request *req)