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serial: 8250: lock port for stop_rx() in omap8250_irq()
The uarts_ops stop_rx() callback expects that the port->lock is
taken and interrupts are disabled.
Fixes: 1fe0e1fa32
("serial: 8250_omap: Handle optional overrun-throttle-ms property")
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230525093159.223817-4-john.ogness@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -658,7 +658,9 @@ static irqreturn_t omap8250_irq(int irq, void *dev_id)
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up->ier = port->serial_in(port, UART_IER);
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if (up->ier & (UART_IER_RLSI | UART_IER_RDI)) {
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spin_lock(&port->lock);
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port->ops->stop_rx(port);
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spin_unlock(&port->lock);
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} else {
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/* Keep restarting the timer until
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* the input overrun subsides.
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