Frieder Schrempf e8b2a61875 serial: mctrl_gpio: Avoid probe failures in case of missing gpiolib ... If CONFIG_GPIOLIB is not enabled, mctrl_gpio_init() and mctrl_gpio_init_noauto() will currently return an error pointer with -ENOSYS. As the mctrl GPIOs are usually optional, drivers need to check for this condition to allow continue probing. To avoid the need for this check in each driver, we return NULL instead, as all the mctrl_gpio_*() functions are skipped anyway. We also adapt mctrl_gpio_to_gpiod() to be in line with this change. Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Uwe Kleine-Knig <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20190802100349.8659-1-frieder.schrempf@kontron.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-09-04 12:43:50 +02:00
..
hvc	tty: hvcs: Fix odd use of strlcpy	2019-09-04 12:43:44 +02:00
ipwireless	tty: add SPDX identifiers to Kconfig and Makefiles	2019-04-04 18:48:43 +02:00
serdev	tty: add SPDX identifiers to Kconfig and Makefiles	2019-04-04 18:48:43 +02:00
serial	serial: mctrl_gpio: Avoid probe failures in case of missing gpiolib	2019-09-04 12:43:50 +02:00
vt	vt: Grab console_lock around con_is_bound in show_bind	2019-07-25 13:47:35 +02:00
amiserial.c	kill TIOCSERGSTRUCT	2018-10-13 00:50:53 -04:00
cyclades.c	cyclades: switch to ->[sg]et_serial()	2018-10-13 00:50:30 -04:00
ehv_bytechan.c	tty: Convert to using %pOFn instead of device_node.name	2018-09-18 16:07:25 +02:00
goldfish.c
isicom.c	tty/isicom: remove redundant assignment to variable word_count	2019-09-04 12:43:44 +02:00
Kconfig	docs: serial: move it to the driver-api	2019-07-15 11:03:03 -03:00
Makefile	tty: Add NULL TTY driver	2019-04-16 15:21:34 +02:00
mips_ejtag_fdc.c
moxa.c	moxa: switch to ->[sg]et_serial()	2018-10-13 00:50:32 -04:00
moxa.h
mxser.c	mxser: switch to ->[sg]et_serial()	2018-10-13 00:50:32 -04:00
mxser.h
n_gsm.c	tty: n_gsm: add helpers to convert mux-num to/from tty-base	2019-09-04 12:43:43 +02:00
n_hdlc.c	tty/n_hdlc: mark expected switch fall-through	2019-02-14 10:49:19 +01:00
n_null.c
n_r3964.c	tty: Don't block on IO when ldisc change is pending	2018-12-05 12:16:33 +01:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c	n_tty: check for negative and zero space return from tty_write_room	2019-04-16 15:21:33 +02:00
nozomi.c	tty: nozomi: Use dev_get_drvdata	2019-09-04 12:43:44 +02:00
pty.c	Revert "tty: pty: Fix race condition between release_one_tty and pty_write"	2019-03-29 15:47:40 +01:00
rocket_int.h
rocket.c	TTY/Serial patches for 5.2-rc1	2019-05-08 10:07:28 -07:00
rocket.h	tty: rocket: Remove RCPK_GET_STRUCT ioctl	2019-04-25 11:58:56 +02:00
synclink_gt.c	synclink_gt(): fix compat_ioctl()	2018-10-13 00:50:52 -04:00
synclink.c	tty/synclink: remove ISA support	2019-02-12 08:51:33 +01:00
synclinkmp.c	synclink: reduce pointless checks in ->ioctl()	2018-10-13 00:50:43 -04:00
sysrq.c	panic: avoid the extra noise dmesg	2019-05-14 19:52:51 -07:00
tty_audit.c	audit: join tty records to their syscall	2019-02-07 21:33:54 -05:00
tty_baudrate.c	termios, tty/tty_baudrate.c: fix buffer overrun	2018-11-08 03:36:45 -08:00
tty_buffer.c	tty: increase the default flip buffer limit to 2*640K	2019-01-30 12:03:58 +01:00
tty_io.c	tty: tty_io: fix driver refcount imbalance on error path	2019-05-24 10:09:12 +02:00
tty_ioctl.c	move compat handling of tty ioctls to tty_compat_ioctl()	2018-09-14 11:12:17 -04:00
tty_jobctrl.c	tty: fix read of tty->pgrp outside of ctrl_lock	2019-03-28 01:28:23 +09:00
tty_ldisc.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
tty_ldsem.c	tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop	2019-07-25 15:39:24 +02:00
tty_mutex.c
tty_port.c	Revert "tty: fix NULL pointer issue when tty_port ops is not set"	2019-04-16 15:21:34 +02:00
ttynull.c	tty: Add NULL TTY driver	2019-04-16 15:21:34 +02:00
vcc.c	tty: fix up a few remaining files without SPDX identifiers	2019-04-04 18:48:43 +02:00