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| author | Jan Henrik Weinstock <jan.weinstock@rwth-aachen.de> | 2021-02-01 16:14:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-03 18:22:43 +0100 |
| commit | ca30f70de83a89862340948dca9bcbe31b6a8632 (patch) | |
| tree | db13d7f009d1b84330b46e6eb1cf835839dc1349 /drivers/char | |
| parent | 9ef8ddf400dd0ccf15f0b1d1605a22ee0c635bc6 (diff) | |
hwrng: timeriomem - Fix cooldown period calculation
[ Upstream commit e145f5565dc48ccaf4cb50b7cfc48777bed8c100 ]
Ensure cooldown period tolerance of 1% is actually accounted for.
Fixes: ca3bff70ab32 ("hwrng: timeriomem - Improve performance...")
Signed-off-by: Jan Henrik Weinstock <jan.weinstock@rwth-aachen.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/timeriomem-rng.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c index 03ff5483d865..1aa7e0b0ae0f 100644 --- a/drivers/char/hw_random/timeriomem-rng.c +++ b/drivers/char/hw_random/timeriomem-rng.c @@ -79,7 +79,7 @@ static int timeriomem_rng_read(struct hwrng *hwrng, void *data, */ if (retval > 0) usleep_range(period_us, - period_us + min(1, period_us / 100)); + period_us + max(1, period_us / 100)); *(u32 *)data = readl(priv->io_base); retval += sizeof(u32); |