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Commit 68734bc9 authored by PrasannaKumar Muralidharan's avatar PrasannaKumar Muralidharan Committed by Herbert Xu
Browse files

hwrng: Remove check for max less than 4 bytes 



HW RNG core never asks for data less than 4 bytes. The check whether max
is less than 4 bytes is unnecessary. Remove the check.

Signed-off-by: default avatarPrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 27c4d548

drivers/char/hw_random/meson-rng.c

+0 −3
Original line number Diff line number Diff line
@@ -76,9 +76,6 @@ static int meson_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait) 
	struct meson_rng_data *data =

			container_of(rng, struct meson_rng_data, rng);



	if (max < sizeof(u32))

		return 0;



	*(u32 *)buf = readl_relaxed(data->base + RNG_DATA);



	return sizeof(u32);

drivers/char/hw_random/st-rng.c

+0 −3
Original line number Diff line number Diff line
@@ -54,9 +54,6 @@ static int st_rng_read(struct hwrng *rng, void *data, size_t max, bool wait) 
	u32 status;

	int i;



	if (max < sizeof(u16))

		return -EINVAL;



	/* Wait until FIFO is full - max 4uS*/

	for (i = 0; i < ST_RNG_FILL_FIFO_TIMEOUT; i++) {

		status = readl_relaxed(ddata->base + ST_RNG_STATUS_REG);