diff options
Diffstat (limited to 'drivers/char/hw_random')
| -rw-r--r-- | drivers/char/hw_random/msm-rng.c | 4 | ||||
| -rw-r--r-- | drivers/char/hw_random/pic32-rng.c | 3 | ||||
| -rw-r--r-- | drivers/char/hw_random/pseries-rng.c | 5 |
3 files changed, 2 insertions, 10 deletions
diff --git a/drivers/char/hw_random/msm-rng.c b/drivers/char/hw_random/msm-rng.c index 96fb986402eb..841fee845ec9 100644 --- a/drivers/char/hw_random/msm-rng.c +++ b/drivers/char/hw_random/msm-rng.c @@ -90,10 +90,6 @@ static int msm_rng_read(struct hwrng *hwrng, void *data, size_t max, bool wait) /* calculate max size bytes to transfer back to caller */ maxsize = min_t(size_t, MAX_HW_FIFO_SIZE, max); - /* no room for word data */ - if (maxsize < WORD_SZ) - return 0; - ret = clk_prepare_enable(rng->clk); if (ret) return ret; diff --git a/drivers/char/hw_random/pic32-rng.c b/drivers/char/hw_random/pic32-rng.c index 11dc9b7c09ce..9b5e68a71d01 100644 --- a/drivers/char/hw_random/pic32-rng.c +++ b/drivers/char/hw_random/pic32-rng.c @@ -62,9 +62,6 @@ static int pic32_rng_read(struct hwrng *rng, void *buf, size_t max, u32 t; unsigned int timeout = RNG_TIMEOUT; - if (max < 8) - return 0; - do { t = readl(priv->base + RNGRCNT) & RCNT_MASK; if (t == 64) { diff --git a/drivers/char/hw_random/pseries-rng.c b/drivers/char/hw_random/pseries-rng.c index 63ce51d09af1..d9f46b437cc2 100644 --- a/drivers/char/hw_random/pseries-rng.c +++ b/drivers/char/hw_random/pseries-rng.c @@ -28,7 +28,6 @@ static int pseries_rng_read(struct hwrng *rng, void *data, size_t max, bool wait) { u64 buffer[PLPAR_HCALL_BUFSIZE]; - size_t size = max < 8 ? max : 8; int rc; rc = plpar_hcall(H_RANDOM, (unsigned long *)buffer); @@ -36,10 +35,10 @@ static int pseries_rng_read(struct hwrng *rng, void *data, size_t max, bool wait pr_err_ratelimited("H_RANDOM call failed %d\n", rc); return -EIO; } - memcpy(data, buffer, size); + memcpy(data, buffer, 8); /* The hypervisor interface returns 64 bits */ - return size; + return 8; } /** |
