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(parent: 882aa65) | patch
hwrng: arm-smccc-trng - fix NO_ENTROPY handling
authorJames Cowgill <james.cowgill@blaize.com>
Mon, 1 Aug 2022 20:04:18 +0000 (20:04 +0000)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 19 Aug 2022 10:39:35 +0000 (18:39 +0800)
commit042b4b169c6fb9d4df268d66282d7302dd73d37b
tree8d722cdcb291c74c40822f008b6a7ad1de73ba4btree | snapshot
parent882aa6525cabcfa0cea61e1a19c9af4c543118accommit | diff
hwrng: arm-smccc-trng - fix NO_ENTROPY handling

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: 0888d04b47a1 ("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>
drivers/char/hw_random/arm_smccc_trng.c diff | blob | history
Domain: System / Kernel;