Am Sonntag, 26. März 2017, 18:01:26 CEST schrieb Krzysztof Kozlowski:

Hi Krzysztof,

quoted

quoted

+       if (slen < EXYNOS_RNG_SEED_SIZE) {
+               dev_warn(rng->dev, "Seed too short (only %u bytes)\n",
slen); +               return -EINVAL;
+       }

Will it be helpful to print the required seed size?

It is in /proc/crypto... It is not a problem to print it but isn't that
redundant?

You also get the information from crypto_user.

See [1] for a user space API.

[1] https://github.com/smuellerDD/libkcapi/commit/
f856e8c655b7e5c53f59ef8c5754ad59b196df08


Ciao
Stephan