diff options
| author | PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> | 2016-08-26 20:32:04 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-08-31 17:00:49 +0200 |
| commit | 68734bc9f58ee01f1b530394cc31d58e364125f6 (patch) | |
| tree | f6ed179b8fa66ebd31e07e873d8b04c37416a7b5 /drivers/char | |
| parent | crypto: xor - Fix warning when XOR_SELECT_TEMPLATE is unset (diff) | |
| download | linux-68734bc9f58ee01f1b530394cc31d58e364125f6.tar.xz linux-68734bc9f58ee01f1b530394cc31d58e364125f6.zip | |
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>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/meson-rng.c | 3 | ||||
| -rw-r--r-- | drivers/char/hw_random/st-rng.c | 3 |
2 files changed, 0 insertions, 6 deletions
diff --git a/drivers/char/hw_random/meson-rng.c b/drivers/char/hw_random/meson-rng.c index 0cfd81bcaeac..58bef39f7286 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 1d35363d23c5..7e8aa6b7b452 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); |