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rahix authored
In severe error conditions, asynchronous prints will never work. For such cases we need a way to make prints happen synchronously again, the same way it works during early boot. Add a serial_return_to_synchronous() function which unconditionally switches the serial driver code to synchronous mode. Only use this function in unrecoverable error conditions! Signed-off-by: Rahix <rahix@rahix.de>
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