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@xxxxxxxxx>
---
drivers/char/hw_random/meson-rng.c | 3 ---
drivers/char/hw_random/st-rng.c | 3 ---
2 files changed, 6 deletions(-)
diff --git a/drivers/char/hw_random/meson-rng.c b/drivers/char/hw_random/meson-rng.c
index 0cfd81b..58bef39 100644
--- a/drivers/char/hw_random/meson-rng.c
+++ b/drivers/char/hw_random/meson-rng.c
@@ -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);
diff --git a/drivers/char/hw_random/st-rng.c b/drivers/char/hw_random/st-rng.c
index 1d35363..7e8aa6b 100644
--- a/drivers/char/hw_random/st-rng.c
+++ b/drivers/char/hw_random/st-rng.c
@@ -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);
--
2.5.0
--
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