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serial: ns16550: check return of clock_control_get_rate()

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This adds a check of the return of clock_control_get_rate(),
and returns error in uart_configure() if unsuccessful in
getting clock rate.

Fixes #60478

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2023-07-17 16:35:07 -07:00 • committed by Fabio Baltieri
commit 20021abf0a
1 changed files with 6 additions and 2 deletions
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8
drivers/serial/uart_ns16550.c
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@ -458,8 +458,12 @@ static int uart_ns16550_configure(const struct device *dev,
goto out;
}
clock_control_get_rate(dev_cfg->clock_dev, dev_cfg->clock_subsys,
&pclk);
if (clock_control_get_rate(dev_cfg->clock_dev,
dev_cfg->clock_subsys,
&pclk) != 0) {
ret = -EINVAL;
goto out;
}
}
set_baud_rate(dev, cfg->baudrate, pclk);