This series fixes several bugs in qcom-rng, including failure to enable
the clock before accessing the hardware, generating biased random
numbers, and generating duplicate or non-random numbers due to missing
locking.  To fix the latter bug, it drops the support for the
duplicative crypto_rng interface, which isn't used in practice, leaving
just hwrng which is the one that actually matters.

This series is targeting cryptodev/master

Changed in v2:
  - Changed patch 3 to make the driver continue to be bound even when
    hwrng is unsupported.
  - Added blank line in patch 2
  - Added Reviewed-by

Eric Biggers (4):
  crypto: qcom-rng - Enable clock in hwrng case
  crypto: qcom-rng - Allow zero as a random number
  crypto: qcom-rng - Remove crypto_rng interface
  hwrng: qcom - Move qcom-rng.c into drivers/char/hw_random/

 arch/arm/configs/multi_v7_defconfig           |   2 +-
 arch/arm/configs/qcom_defconfig               |   2 +-
 arch/arm64/configs/defconfig                  |   2 +-
 drivers/char/hw_random/Kconfig                |  11 ++
 drivers/char/hw_random/Makefile               |   1 +
 drivers/{crypto => char/hw_random}/qcom-rng.c | 156 +++---------------
 drivers/crypto/Kconfig                        |  12 --
 drivers/crypto/Makefile                       |   1 -
 drivers/gpu/drm/ci/arm64.config               |   2 +-
 9 files changed, 41 insertions(+), 148 deletions(-)
 rename drivers/{crypto => char/hw_random}/qcom-rng.c (53%)


base-commit: 79bbe453e5bfa6e1c6aa2e8329bfc8f152b81c9b
-- 
2.54.0.1064.gd145956f57-goog