Re: [PATCH] crypto: exynos-rng - Remove exynos-rng driver

[Herbert Xu]

On Sun, May 31, 2026 at 10:59:31AM -0700, Eric Biggers wrote:
> This driver has no purpose.  It doesn't feed into the Linux RNG, nor
> does it implement the hwrng interface.  It is accessible only via the
> "rng" algorithm type of AF_ALG, which isn't used in practice.  Everyone
> uses either the Linux RNG, or rarely /dev/hwrng.
> 
> Moreover, this is a PRNG whose only source of entropy is the 160-bit
> seed the user passes in.  So this can be used only by a user who already
> has a source of cryptographically secure random numbers, such as
> /dev/random.  Which they can, and do, just use in the first place.
> 
> Just remove this driver.  There's no need to keep useless code around.
> 
> Note that the other crypto_rng drivers in drivers/crypto/ are similarly
> unused and are being removed too.  This commit just handles exynos-rng.
> 
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
>  MAINTAINERS                         |   8 -
>  arch/arm/configs/exynos_defconfig   |   1 -
>  arch/arm/configs/multi_v7_defconfig |   1 -
>  drivers/crypto/Kconfig              |  18 --
>  drivers/crypto/Makefile             |   1 -
>  drivers/crypto/exynos-rng.c         | 399 ----------------------------
>  6 files changed, 428 deletions(-)
>  delete mode 100644 drivers/crypto/exynos-rng.c

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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