braille-console: Fix value returned by _braille_console_setup
authorSamuel Thibault <samuel.thibault@ens-lyon.org>
Sun, 26 Mar 2017 20:47:36 +0000 (22:47 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 31 Mar 2017 13:29:06 +0000 (15:29 +0200)
commit2ed2b8621be2708c0f6d61fe9841e9ad8b9753f0
tree341e078fa6625fecaea9710cd303630b2bfde4da
parentcfa6eb239154315e6efcdda1d929e024097f927b
braille-console: Fix value returned by _braille_console_setup

commit bbeddf52adc1 ("printk: move braille console support into
separate braille.[ch] files") introduced _braille_console_setup()
to outline the braille initialization code.  There was however some
confusion over the value it was supposed to return. commit 2cfe6c4ac7ee
("printk: Fix return of braille_register_console()") tried to fix it
but failed to.

This fixes and documents the returned value according to the use
in printk.c: non-zero return means a parsing error, and thus this
console configuration should be ignored.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Aleksey Makarov <aleksey.makarov@linaro.org>
Cc: Joe Perches <joe@perches.com>
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/printk/braille.c
kernel/printk/braille.h