tree c57d310e04c9b6458ea80fedbb65bbbafdcd0750
parent 2e8c04f75731bbd968fa77e94ed856f2dcf53ae6
author Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> 1519769392 +0100
committer Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> 1523552564 +0200

auxdisplay: charlcd: Fix and clean up handling of x/y commands

The current version is not parsing multiple x/y commands as the code
originally intended. On top of that, kstrtoul() expects
NULL-terminated strings. Finally, the code does two passes over
the string.

Some explanations about the supported syntax are added as well.

Cc: Willy Tarreau <w@1wt.eu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Robert Abel <rabel@robertabel.eu>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>