serial: 8250: Add NOMSI bug for bcm2835aux
The BCM2835 mini-UART has no modem status interrupt, causing all
transmission to stop, never to use, if a speed change ever happens
while the CTS signal is high.
Add a simple polling mechanism in order to allow recovery in that
situation.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
parent
a5401408
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