hwrng: arm-smccc-trng - fix NO_ENTROPY handling

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[ Upstream commit 042b4b169c ]

The SMCCC_RET_TRNG_NO_ENTROPY switch arm is never used because the
NO_ENTROPY return value is negative and negative values are handled
above the switch by immediately returning.

Fix by handling errors using a default arm in the switch.

Fixes: 0888d04b47 ("hwrng: Add Arm SMCCC TRNG based driver")
Signed-off-by: James Cowgill <james.cowgill@blaize.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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James Cowgill 2022-08-01 20:04:18 +00:00 • committed by Greg Kroah-Hartman

parent 2720934713

commit 8ffe511b7d

1 changed files with 2 additions and 2 deletions

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drivers/char/hw_random/arm_smccc_trng.c

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