serial: altera: don't enable any irq if the device doesn't feature an irq

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If the irq line of an altera UART device isn't used to report interrupts
for this device the driver better ensures that this device doesn't pull
this line to active state and so disturb the whatever might be connected
to this line.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Uwe Kleine-König 2018-01-25 14:30:44 +01:00 • committed by Greg Kroah-Hartman

parent 0e254963b6

commit 2ea6ad8bc6

1 changed files with 22 additions and 8 deletions

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drivers/tty/serial/altera_uart.c

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