tty: serial: samsung: Disable interrupts in a suspend-friendly way

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Since the interrupt mask register is not preserved across system suspend
and it defaults to all interrupts enabled, it is not enough to disable
UART interrupt.

This patch adds free_irq to port shutdown and mask setting to port
startup to handle IRQ disabling in a suspend-friendly way. In addition,
a bug caused by multiple request_irq calls in port startup callback is
fixed.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Tomasz Figa 2013-03-26 15:57:35 +01:00 • committed by Greg Kroah-Hartman

parent cfcec52e97

commit b6ad293555

1 changed files with 4 additions and 0 deletions

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drivers/tty/serial/samsung.c

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