On Sat, May 24, 2014 at 02:00:03PM +0200, Marek Vasut wrote: > > > + } > > +#endif > > + > > +#ifdef CONFIG_CRYPTO_DEV_SUNXI_SS_MD5 > > + err = crypto_register_shash(&sunxi_md5_alg); > > Do not use shash for such device. This is clearly and ahash (and async in > general) device. The rule of a thumb here is that you use sync algos only for > devices which have dedicated instructions for computing the transformation. For > devices which are attached to some kind of bus, you use async algos (ahash etc). I'm sorry that I didn't catch this earlier but there is no such rule. Unless you need the async interface you should stick to the sync interfaces for the sake of simplicity. We have a number of existing drivers that are synchronous but using the async interface. They should either be converted over to the sync interface or made interrupt-driven if possible. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
