[PATCH] Add return value to indicate unsopported cipher

[Sylvain Munaut]

Hi,

> Right now there's no way for user of osmo_a5(..) to understand if particular cipher
> (a5/3 for example) is supported or not.

Indeed ..


> Attached patch adds simple return value to osmo_a5 to fix that.
> Of course I would rather see a5/3 included into mainline but in a meantime this patch
> might be useful too :)

mmm, the "osmocom" usual way is to return 0 for success and a negative
error, in this case -ENOTSUP would be perfect.

true/false is more a C++ thing :p


Cheers,

    Sylvain