crypto: inside-secure - Prevent missing of processing errors
authorPascal van Leeuwen <pvanleeuwen@rambus.com>
Tue, 8 Sep 2020 06:10:45 +0000 (08:10 +0200)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 18 Sep 2020 07:20:10 +0000 (17:20 +1000)
commitbd03b0214ad426c078d46c2b54a3b14f81b97f6b
tree2fba28b5a9e607da605b6c654aa567e71cca8c96
parent9b20cbf8ebf072ef7ef603c139c004904b2ddd52
crypto: inside-secure - Prevent missing of processing errors

On systems with coherence issues, packet processed could succeed while
it should have failed, e.g. because of an authentication fail.
This is because the driver would read stale status information that had
all error bits initialised to zero = no error.
Since this is potential a security risk, we want to prevent it from being
a possibility at all. So initialize all error bits to error state, so
that reading stale status information will always result in errors.

Signed-off-by: Pascal van Leeuwen <pvanleeuwen@rambus.com>
Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/inside-secure/safexcel_ring.c