When quality is set to 0 this driver is not used as randomness source by HWRNG framework at all. So set the quality and finally make this driver work. The value of the quality was discussed before ( see https://patchwork.kernel.org/patch/9850669/ ) and it is still a rough value. Signed-off-by: Philipp Puschmann <philipp.puschmann@xxxxxxxxx> --- drivers/crypto/caam/caamrng.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c index a387c8d49a62..b6fd60f7638e 100644 --- a/drivers/crypto/caam/caamrng.c +++ b/drivers/crypto/caam/caamrng.c @@ -294,6 +294,7 @@ static struct hwrng caam_rng = { .name = "rng-caam", .cleanup = caam_cleanup, .read = caam_read, + .quality = 990, }; static void __exit caam_rng_exit(void) -- 2.20.1