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drivers: serial: 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 16:05:16 +02:00 • committed by Carles Cufí
commit 9456eca5c0
13 changed files with 52 additions and 1 deletions
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2
drivers/serial/uart_ns16550.c
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@ -377,7 +377,7 @@ static int uart_ns16550_configure(const struct device *dev,
if (dev_cfg->sys_clk_freq != 0U) {
pclk = dev_cfg->sys_clk_freq;
} else {
if (dev_cfg->clock_dev == NULL) {
if (!device_is_ready(dev_cfg->clock_dev)) {
ret = -EINVAL;
goto out;
}