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| author | Horia Geantă <horia.geanta@nxp.com> | 2018-02-05 10:15:52 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-02-08 12:38:13 +0100 |
| commit | 225ece3e7dad4cfc44cca38ce7a3a80f255ea8f1 (patch) | |
| tree | 90c6a304a1698b5e9ee8e644d3c62c7df22a4355 /drivers/hwspinlock | |
| parent | crypto: sha3-generic - Use __optimize to support old compilers (diff) | |
| download | linux-225ece3e7dad4cfc44cca38ce7a3a80f255ea8f1.tar.xz linux-225ece3e7dad4cfc44cca38ce7a3a80f255ea8f1.zip | |
crypto: caam - fix endless loop when DECO acquire fails
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.
Cc: <stable@vger.kernel.org> # 3.13+
Fixes: 1005bccd7a4a6 ("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>
Diffstat (limited to 'drivers/hwspinlock')
0 files changed, 0 insertions, 0 deletions