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Horia Geantă 7b66838321 crypto: caam - fix endless loop when DECO acquire fails

commit 225ece3e7d upstream.

In case DECO0 cannot be acquired - i.e. run_descriptor_deco0() fails
with -ENODEV, caam_probe() enters an endless loop:

run_descriptor_deco0
	ret -ENODEV
	-> instantiate_rng
		-ENODEV, overwritten by -EAGAIN
		ret -EAGAIN
		-> caam_probe
			-EAGAIN results in endless loop

It turns out the error path in instantiate_rng() is incorrect,
the checks are done in the wrong order.

Fixes: 1005bccd7a ("crypto: caam - enable instantiation of all RNG4 state handles")
Reported-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Suggested-by: Auer Lukas <lukas.auer@aisec.fraunhofer.de>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-02-16 20:09:45 +01:00

caamalg.c

crypto: caam - fix AEAD givenc descriptors

2017-01-06 11:16:12 +01:00

caamhash.c

crypto: caam - fix signals handling

2017-07-21 07:44:59 +02:00

caamrng.c

crypto: caam - Use the preferred style for memory allocations

2015-08-24 22:07:42 +08:00

compat.h

crypto: caam - Enable and disable clocks on Freescale i.MX platforms