The section at the top of random.c which documents the input functions available does not document add_hwgenerator_randomness() which might lead a reader to overlook it. Add a brief note about it.
Signed-off-by: Mark Brown <broo...@kernel.org> --- This patch is almost a year old at this point... drivers/char/random.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/char/random.c b/drivers/char/random.c index 5f3b8ac9d97b..3e17e04c3cef 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -228,6 +228,14 @@ * particular randomness source. They do this by keeping track of the * first and second order deltas of the event timings. * + * There is also an interface for true hardware RNGs: + * + * void add_hwgenerator_randomness(const char *buffer, size_t count, + * size_t entropy); + * + * This will credit entropy as specified by the caller, if the entropy + * pool is full it will block until more entropy is needed. + * * Ensuring unpredictability at system startup * ============================================ * -- 2.20.1
