Commit 34093993 authored by Jorge Ramirez-Ortiz's avatar Jorge Ramirez-Ortiz Committed by Herbert Xu
Browse files

hwrng: optee - handle unlimited data rates 



Data rates of MAX_UINT32 will schedule an unnecessary one jiffy
timeout on the call to msleep. Avoid this scenario by using 0 as the
unlimited data rate.

Signed-off-by: default avatarJorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: default avatarSumit Garg <sumit.garg@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 3a95887e

drivers/char/hw_random/optee-rng.c

+1 −1
Original line number Diff line number Diff line
@@ -128,7 +128,7 @@ static int optee_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait) 
		data += rng_size;

		read += rng_size;



		if (wait) {

		if (wait && pvt_data->data_rate) {

			if (timeout-- == 0)

				return read;

			msleep((1000 * (max - read)) / pvt_data->data_rate);