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drivers: watchdog: check if clock device is ready before accessing

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Add check for device_is_ready() before accessing clock control devices.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2022-08-08 16:06:08 +02:00 • committed by Carles Cufí
commit b5a79fa4ad
4 changed files with 20 additions and 0 deletions
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5
drivers/watchdog/wdt_mcux_wdog32.c
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@ -93,6 +93,11 @@ static int mcux_wdog32_install_timeout(const struct device *dev,
#if DT_NODE_HAS_PROP(DT_INST_PHANDLE(0, clocks), clock_frequency)
clock_freq = config->clock_frequency;
#else /* !DT_NODE_HAS_PROP(DT_INST_PHANDLE(0, clocks), clock_frequency) */
if (!device_is_ready(config->clock_dev)) {
LOG_ERR("clock control device not ready");
return -ENODEV;
}
if (clock_control_get_rate(config->clock_dev, config->clock_subsys,
&clock_freq)) {
return -EINVAL;