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(parent: 97ae021) | patch
tty: add function to convert device name to number
authorOkash Khawaja <okash.khawaja@gmail.com>
Sun, 25 Jun 2017 18:40:00 +0000 (19:40 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 27 Jun 2017 07:08:47 +0000 (09:08 +0200)
commitfc61ed51270e86440cf7cf84cbe1d86753592932
treec5df76a420a96193eb49c8218e4be192b7d87358tree | snapshot (tar.gz zip)
parent97ae021ab818fe29ac78d3acc0ecc6d85fc7cd5bcommit | diff
tty: add function to convert device name to number

The function converts strings like ttyS0 and ttyUSB0 to dev_t like
(4, 64) and (188, 0). It does this by scanning tty_drivers list for
corresponding device name and index. If the driver is not registered,
this function returns -ENODEV. It also acquires tty_mutex.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/tty_io.c diff | blob | blame | history
include/linux/tty.h diff | blob | blame | history