diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/opp/core.c | 7 | ||||
| -rw-r--r-- | drivers/opp/opp.h | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index b2715950e76d..e166bfe5fc90 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -2277,6 +2277,10 @@ struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name) goto err; } + /* Another CPU that shares the OPP table has set the clkname ? */ + if (opp_table->clk_configured) + return opp_table; + /* clk shouldn't be initialized at this point */ if (WARN_ON(opp_table->clk)) { ret = -EBUSY; @@ -2291,6 +2295,8 @@ struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name) goto err; } + opp_table->clk_configured = true; + return opp_table; err: @@ -2311,6 +2317,7 @@ void dev_pm_opp_put_clkname(struct opp_table *opp_table) clk_put(opp_table->clk); opp_table->clk = ERR_PTR(-EINVAL); + opp_table->clk_configured = false; dev_pm_opp_put_opp_table(opp_table); } diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index 45e3a55239a1..9e1cfcb0ea98 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -149,6 +149,7 @@ enum opp_table_access { * @supported_hw: Array of version number to support. * @supported_hw_count: Number of elements in supported_hw array. * @prop_name: A name to postfix to many DT properties, while parsing them. + * @clk_configured: Clock name is configured by the platform. * @clk: Device's clock handle * @regulators: Supply regulators * @regulator_count: Number of power supply regulators. Its value can be -1 @@ -200,6 +201,7 @@ struct opp_table { unsigned int *supported_hw; unsigned int supported_hw_count; const char *prop_name; + bool clk_configured; struct clk *clk; struct regulator **regulators; int regulator_count; |