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drivers: clock_control: Check to see if the clock device is ready

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Add device_is_ready check to clock APIs as we might now get the clock
device via DEVICE_DT_GET and thus may not have checked if the clock
controller device is ready.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2021-02-10 12:44:34 -06:00 • committed by Anas Nashif
commit c62e445c70
1 changed files with 20 additions and 0 deletions
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20
include/drivers/clock_control.h
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@ -103,6 +103,10 @@ struct clock_control_driver_api {
static inline int clock_control_on(const struct device *dev,
clock_control_subsys_t sys)
{
if (!device_is_ready(dev)) {
return -ENODEV;
}
const struct clock_control_driver_api *api =
(const struct clock_control_driver_api *)dev->api;
@ -122,6 +126,10 @@ static inline int clock_control_on(const struct device *dev,
static inline int clock_control_off(const struct device *dev,
clock_control_subsys_t sys)
{
if (!device_is_ready(dev)) {
return -ENODEV;
}
const struct clock_control_driver_api *api =
(const struct clock_control_driver_api *)dev->api;
@ -156,6 +164,10 @@ static inline int clock_control_async_on(const struct device *dev,
return -ENOTSUP;
}
if (!device_is_ready(dev)) {
return -ENODEV;
}
return api->async_on(dev, sys, cb, user_data);
}
@ -177,6 +189,10 @@ static inline enum clock_control_status clock_control_get_status(const struct de
return CLOCK_CONTROL_STATUS_UNKNOWN;
}
if (!device_is_ready(dev)) {
return -ENODEV;
}
return api->get_status(dev, sys);
}
@ -191,6 +207,10 @@ static inline int clock_control_get_rate(const struct device *dev,
clock_control_subsys_t sys,
uint32_t *rate)
{
if (!device_is_ready(dev)) {
return -ENODEV;
}
const struct clock_control_driver_api *api =
(const struct clock_control_driver_api *)dev->api;