kernel/drivers/tty/serial/serial_mctrl_gpio.c, branch linux-4.1.y

serial: mctrl_gpio: Fix build warnings

2015-03-11T12:55:20Z

Fix the following build warnings: drivers/tty/serial/serial_mctrl_gpio.c: In function 'mctrl_gpio_init': drivers/tty/serial/serial_mctrl_gpio.c:110:4: warning: return makes pointer from integer without a cast return PTR_ERR(gpios->gpio[i]); ^ /home/build/work/batch/drivers/tty/serial/serial_mctrl_gpio.c:90:6: warning: unused variable 'err' [-Wunused-variable] int err; ^ Return ERR_CAST and remove the unused 'err' variable to fix them. Fixes: 1d267ea6539f ("serial: mctrl-gpio: simplify init routine") Reported-by: Olof's autobuilder Signed-off-by: Fabio Estevam Acked-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

serial: mctrl-gpio: simplify init routine

2015-03-07T02:15:04Z

Instead of ignoring errors returned by devm_gpiod_get_index use devm_gpiod_get_index_optional which results in slightly more strict error handling which is good. Also use the fourth parameter to devm_gpiod_get_index_optional to be able to drop the explicit direction setting. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

serial: mctrl-gpio: don't check for struct mctrl_gpios * to be invalid

2015-03-07T02:15:04Z

Drivers using mctrl-gpio must not pass invalid values for struct mctrl_gpios *. All drivers were fixed in this regard and so some checks can go away or be simplified. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

serial: mctrl_gpio: use gpiod_set_array function

2014-12-02T13:25:42Z

Make the serial_mctrl_gpio driver the first user of the new gpiod_set_array function, which is now available in the linux-gpio devel tree. All modem control output signals are now set simultaneously. Signed-off-by: Rojhalat Ibrahim Reviewed-by: Alexandre Courbot Acked-by: Greg Kroah-Hartman Signed-off-by: Linus Walleij

tty: serial_mctrl_gpio: Fix COMPILE_TEST build for architectures with custom termios.h

2014-09-20T13:56:55Z

This patch fixes COMPILE_TEST build of serial_mctrl_gpio module for architectures with custom termios.h header. sparc64:allmodconfig: In file included from drivers/tty/serial/serial_mctrl_gpio.c:21:0: include/uapi/asm-generic/termios.h:22:8: error: redefinition of 'struct termio' ./arch/sparc/include/uapi/asm/termbits.h:16:8: note: originally defined here make[3]: *** [drivers/tty/serial/serial_mctrl_gpio.o] Error 1 Reported-by: Guenter Roeck Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman

tty/serial: Add GPIOLIB helpers for controlling modem lines

2014-05-28T19:49:14Z

This patch add some helpers to control modem lines (CTS/RTS/DSR...) via GPIO. This will be useful for many boards which have a serial controller that only handle CTS/RTS pins (or even just RX/TX). Signed-off-by: Richard Genoud Acked-by: Greg Kroah-Hartman Tested-by: Yegor Yefremov Signed-off-by: Greg Kroah-Hartman