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| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-04-15 10:23:59 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-04-23 17:55:27 +0200 |
| commit | 4e1541593017d76cfa04bd666de8e4dbcfe3105d (patch) | |
| tree | f57ab3f0ec6a8e32977145326d10243003cdb202 /lib/mpi | |
| parent | dc87f6dd058a648cd2a35e4aa04592dccdc9f0c2 (diff) | |
gpiolib: improve the robustness of watch/unwatch ioctl()
This makes the new ioctl() a bit more robust - we now check if a line
is already being watched and return -EBUSY if the user-space tries to
start watching it again. Same for unwatch - return -EBUSY if user-space
tries to unwatch a line that's not being watched.
Fixes: 51c1064e82e7 ("gpiolib: add new ioctl() for monitoring changes in line info")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'lib/mpi')
0 files changed, 0 insertions, 0 deletions