tree d4a6a09cc1f92d49801a1786e2e40246db50b2e6
parent cfcec52e9781f08948c6eb98198d65c45be75a70
author Tomasz Figa <t.figa@samsung.com> 1364309855 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1364511834 -0700

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

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>