serial: imx: ensure that RX irqs are off if RX is off

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Make sure that UCR1.RXDMAEN and UCR1.ATDMAEN (for the DMA case) and
UCR1.RRDYEN (for the PIO case) are off iff UCR1.RXEN is disabled. This
ensures that the fifo isn't read with RX disabled which results in an
exception.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Uwe Kleine-König 2018-03-02 11:07:26 +01:00 • committed by Greg Kroah-Hartman

parent dedc64e02f

commit 76821e222c

1 changed files with 64 additions and 28 deletions

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94

drivers/tty/serial/imx.c

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