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: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -76,9 +76,6 @@ static int meson_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
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struct meson_rng_data *data =
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struct meson_rng_data *data =
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container_of(rng, struct meson_rng_data, rng);
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container_of(rng, struct meson_rng_data, rng);
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if (max < sizeof(u32))
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return 0;
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*(u32 *)buf = readl_relaxed(data->base + RNG_DATA);
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*(u32 *)buf = readl_relaxed(data->base + RNG_DATA);
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return sizeof(u32);
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return sizeof(u32);
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@ -54,9 +54,6 @@ static int st_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
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u32 status;
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u32 status;
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int i;
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int i;
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if (max < sizeof(u16))
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return -EINVAL;
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/* Wait until FIFO is full - max 4uS*/
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/* Wait until FIFO is full - max 4uS*/
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for (i = 0; i < ST_RNG_FILL_FIFO_TIMEOUT; i++) {
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for (i = 0; i < ST_RNG_FILL_FIFO_TIMEOUT; i++) {
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status = readl_relaxed(ddata->base + ST_RNG_STATUS_REG);
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status = readl_relaxed(ddata->base + ST_RNG_STATUS_REG);
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