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serial: core: Claim port mutex for set_ldisc()
authorPeter Hurley <peter@hurleysoftware.com>
Wed, 5 Nov 2014 18:11:42 +0000 (13:11 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 6 Nov 2014 22:57:27 +0000 (14:57 -0800)
Three UART drivers (8250, atmel & amba-pl010) enable modem status
interrupts if the line discipline is changed to N_PPS. However,
the uart port flags may only be safely modified while holding the
port mutex.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/serial_core.c patch | blob | history

diff --cc drivers/tty/serial/serial_core.c
Simple merge
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