tree eacd83d158b0926a4bbfb47713af0dd7ec4e8be5
parent 8c270fbceba4e13c992ac138e51db217c4844ed6
author Kent Gibson <warthog618@gmail.com> 1601881366 +0800
committer Linus Walleij <linus.walleij@linaro.org> 1602190636 +0200

gpiolib: cdev: switch from kstrdup() to kstrndup()

Use kstrndup() to copy line labels from the userspace provided char
array, rather than ensuring the char array contains a null terminator
and using kstrdup().

Note that the length provided to kstrndup() still assumes that the char
array does contain a null terminator, so the maximum string length is one
less than the array.  This is consistent with the previous behaviour.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20201005070246.20927-1-warthog618@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>