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

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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>

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Kent Gibson 2020-10-05 15:02:46 +08:00 • committed by Linus Walleij

parent 8c270fbceb

commit f188ac1251

1 changed files with 13 additions and 14 deletions

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drivers/gpio/gpiolib-cdev.c

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