[PATCH LINUX v3 07/10] tty: xuartps: Acquire port lock for shutdown

[Peter Hurley]

On 11/21/2015 09:59 PM, Soren Brinkmann wrote:
> Shutting down the UART port can happen while console operations are in
> progress. Holding the port lock serializes these operations and avoids
> the UART HW to be disabled in the middle of console prints.

Reviewed-by: Peter Hurley <peter at hurleysoftware.com>