Commit Graph

5 Commits

Author SHA1 Message Date
Ofir Drang 3db617e77a crypto: ccree - prevent isr handling in case driver is suspended
ccree irq may be shared with other devices, in order to prevent ccree isr
handling while device maybe suspended we added a check to verify that the
device is not suspended.

Signed-off-by: Ofir Drang <ofir.drang@arm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-06-27 14:28:00 +08:00
Gilad Ben-Yossef 03963caeb0 crypto: ccree - copyright header update
This sacrificial copyright header update is offered to the legal department
as atonement for any changes made in this driver files in the course of
the current year which have not been duly recorded as such.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-25 15:38:14 +08:00
Gilad Ben-Yossef f1071c3e24 crypto: ccree - add missing inline qualifier
Commit 1358c13a48 ("crypto: ccree - fix resume race condition on init")
was missing a "inline" qualifier for stub function used when CONFIG_PM
is not set causing a build warning.

Fixes: 1358c13a48 ("crypto: ccree - fix resume race condition on init")
Cc: stable@kernel.org # v4.20
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-02-22 12:40:56 +08:00
Gilad Ben-Yossef 1358c13a48 crypto: ccree - fix resume race condition on init
We were enabling autosuspend, which is using data set by the
hash module, prior to the hash module being inited, casuing
a crash on resume as part of the startup sequence if the race
was lost.

This was never a real problem because the PM infra was using low
res timers so we were always winning the race, until commit 8234f6734c
("PM-runtime: Switch autosuspend over to using hrtimers") changed that :-)

Fix this by seperating the PM setup and enablement and doing the
latter only at the end of the init sequence.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: stable@kernel.org # v4.20
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-02-08 15:28:02 +08:00
Gilad Ben-Yossef 4c3f97276e crypto: ccree - introduce CryptoCell driver
Introduce basic low level Arm TrustZone CryptoCell HW support.
This first patch doesn't actually register any Crypto API
transformations, these will follow up in the next patch.

This first revision supports the CC 712 REE component.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-02-15 23:26:40 +08:00