[PATCH v9 4/4] crypto: Add Allwinner Security System crypto accelerator

Boris Brezillon boris.brezillon at free-electrons.com
Sun May 17 03:48:11 PDT 2015

Hi Herbert,

On Sun, 17 May 2015 18:34:40 +0800
Herbert Xu <herbert at gondor.apana.org.au> wrote:

> On Sun, May 17, 2015 at 10:45:08AM +0200, Boris Brezillon wrote:
> >
> > From my POV this is not asynchronous at all (see my comments inline),
> > but maybe Herbert can confirm that.
> Well we don't actually require drivers to be asynchronous.  It is
> obviously the preferred method but some hardware may not be capable
> of that.

Yep, but then they shouldn't be declared with CRYPTO_ALG_ASYNC and as an
ablkcipher algorithm (*Asynchronous* Block Cipher), right ?

Regarding the capabilities of this crypto engine, from what I've seen,
it is definitely capable of doing asynchronous requests ;-).

Best Regards,


Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering

More information about the linux-arm-kernel mailing list