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linux/drivers/tty
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Ian Jamison c25bec2de9 serial: imx: Update cached mctrl value when changing RTS 
[ Upstream commit a0983c742a ]

UART core function uart_update_mctrl relies on a cached value of
modem control lines. This was used but not updated by local RTS
control functions within imx.c. These are used for RS485 line
driver enable signalling. Having an out-of-date value in the cached
mctrl can result in the transmitter being enabled when it shouldn't
be.

Fix this by updating the mctrl value before applying it.

Signed-off-by: Ian Jamison <ian.dev@arkver.com>
Origin: id:8195c96e674517b82a6ff7fe914c7ba0f86e702b.1505375165.git.ian.dev@arkver.com
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-12-10 13:40:42 +01:00
..
hvc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipwireless License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
serdev serdev: fix registration of second slave 2017-11-30 08:40:39 +00:00
serial serial: imx: Update cached mctrl value when changing RTS 2017-12-10 13:40:42 +01:00
vt License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
amiserial.c tty: amiserial: drop broken alt-speed support 2017-06-13 11:49:58 +02:00
bfin_jtag_comm.c TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation 2015-03-07 03:44:14 +01:00
cyclades.c tty: cyclades: drop broken alt-speed support 2017-06-13 11:49:58 +02:00
ehv_bytechan.c tty: Convert to using %pOF instead of full_name 2017-07-30 07:35:28 -07:00
goldfish.c tty: goldfish: Implement support for kernel 'earlycon' parameter 2017-08-31 18:58:45 +02:00
isicom.c tty: isicom: constify pci_device_id. 2017-07-30 07:35:27 -07:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2017-09-10 09:57:23 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
metag_da.c timers, drivers/tty/metag_da: Initialize the poll timer as pinned 2016-07-07 10:25:14 +02:00
mips_ejtag_fdc.c tty: mips_ejtag_fdc: constify mips_cdmm_device_id 2017-08-28 20:51:22 +02:00
moxa.c tty: moxa: constify pci_device_id. 2017-07-30 07:35:28 -07:00
moxa.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mxser.c mxser: fix timeout calculation for low rates 2017-09-18 18:19:20 +02:00
mxser.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
n_gsm.c tty: n_gsm: Add compat_ioctl 2017-08-28 20:51:22 +02:00
n_hdlc.c format-security: move static strings to const 2017-05-08 17:15:14 -07:00
n_null.c tty: handle the case where we cannot restore a line discipline 2017-06-03 18:43:46 +09:00
n_r3964.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
n_tracerouter.c n_tracerouter: stop including <asm-generic/bug> 2015-10-15 00:21:10 +02:00
n_tracesink.c n_tracesink: stop including <asm-generic/bug> 2015-10-15 00:21:11 +02:00
n_tracesink.h n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tty.c Fix OpenSSH pty regression on close 2016-05-01 13:22:54 -07:00
nozomi.c tty: nozomi: avoid sprintf buffer overflow 2016-11-29 20:20:07 +01:00
pty.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rocket.c tty: rocket: drop broken alt-speed support 2017-06-13 11:49:58 +02:00
rocket.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rocket_int.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
synclink.c tty: synclink: constify pci_device_id. 2017-07-30 07:35:27 -07:00
synclink_gt.c tty: synclink_gt: constify pci_device_id. 2017-07-30 07:35:28 -07:00
synclinkmp.c tty: synclinkmp: constify pci_device_id. 2017-07-30 07:35:27 -07:00
sysrq.c sysrq : fix Show Regs call trace on ARM 2017-12-10 13:40:42 +01:00
tty_audit.c tty: audit: remove unused variable 2016-03-07 16:11:14 -08:00
tty_baudrate.c tty: move baudrate handling code to a file of its own 2017-04-18 18:01:52 +02:00
tty_buffer.c tty: fix __tty_insert_flip_char regression 2017-08-02 06:58:17 -07:00
tty_io.c Staging/IIO driver updates for 4.14-rc1 2017-09-05 10:36:26 -07:00
tty_ioctl.c tty: move baudrate handling code to a file of its own 2017-04-18 18:01:52 +02:00
tty_jobctrl.c tty: split job control support into a file of its own 2017-04-18 18:01:52 +02:00
tty_ldisc.c tty: fall back to N_NULL if switching to N_TTY fails during hangup 2017-10-13 16:18:33 -07:00
tty_ldsem.c sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
tty_mutex.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tty_port.c Revert "tty: fix port buffer locking" 2017-06-04 10:23:25 +02:00
vcc.c sparc64: vcc: make ktermios const 2017-08-29 15:10:44 -07:00