[0/2] Set the quality value for two HW RNGs

Message

Lukasz Stelmach May 14, 2020, 7:07 p.m. UTC

The rng structure contains the quality field which tells how many bits
of entropy can be obtained from 1024 bits read from a device. With the
quality value set the hw_random framework starts a kernel thread to feed
the entropy pool in the CRNG, which helps to initialize it quickly
especially during boot.

Łukasz Stelmach (2):
  hwrng: iproc-rng200 - Set the quality value
  hwrng: exynos - Set the quality value

 drivers/char/hw_random/exynos-trng.c  | 1 +
 drivers/char/hw_random/iproc-rng200.c | 1 +
 2 files changed, 2 insertions(+)

Comments

Lukasz Stelmach May 19, 2020, 9:25 p.m. UTC | #1

The rng structure contains the quality field which tells how many bits
of entropy can be obtained from 1024 bits read from a device. With the
quality value set the hw_random framework starts a kernel thread to feed
the entropy pool in the CRNG, which helps to initialize it quickly
especially during boot.

Łukasz Stelmach (2):
  hwrng: iproc-rng200 - Set the quality value
  hwrng: exynos - Set the quality value

 drivers/char/hw_random/exynos-trng.c  | 1 +
 drivers/char/hw_random/iproc-rng200.c | 1 +
 2 files changed, 2 insertions(+)

v2:
  - recalculated values using the SP800-90B_EntropyAssessment package