From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> Hello, This is v6 of my quest to introduce ledtriggers for UARTs. The previous series is available at http://lore.kernel.org/r/20191219093947.15502-1-u.kleine-koenig@xxxxxxxxxxxxxx The changes compared to that are that parsing of the dev parameter is more strict and that I set brightness directly from the kworker instead of using led_blink_set_oneshot which makes use of another kworker. (Both requested by Pavel Machek.) For the former I introduced a new helper kstrtodev_t() in the spirit of kstrtoul() to implement the stricter parsing (instead of the lax one using plain sscanf() in v5). Best regards Uwe Uwe Kleine-König (4): lib: new helper kstrtodev_t() tty: rename tty_kopen() and add new function tty_kopen_shared() tty: new helper function tty_get_icount() leds: trigger: implement a tty trigger .../ABI/testing/sysfs-class-led-trigger-tty | 6 + drivers/leds/trigger/Kconfig | 7 + drivers/leds/trigger/Makefile | 1 + drivers/leds/trigger/ledtrig-tty.c | 159 ++++++++++++++++++ drivers/staging/speakup/spk_ttyio.c | 2 +- drivers/tty/tty_io.c | 87 +++++++--- include/linux/kdev_t.h | 2 + include/linux/kernel.h | 1 + include/linux/tty.h | 7 +- lib/kstrtox.c | 46 +++++ 10 files changed, 293 insertions(+), 25 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-class-led-trigger-tty create mode 100644 drivers/leds/trigger/ledtrig-tty.c base-commit: 0bf999f9c5e74c7ecf9dafb527146601e5c848b9 -- 2.24.0