Re: [PATCH 5/9] crypto: qce: Adds sha and hmac transforms

From: Stephen Boyd
Date: Fri Apr 11 2014 - 16:12:49 EST


On 04/10, Stanimir Varbanov wrote:
> On 04/09/2014 03:09 AM, Stephen Boyd wrote:
> > On 04/03, Stanimir Varbanov wrote:
> >
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +static int qce_ahash_import(struct ahash_request *req, const void *in)
> >> +{
> >> + struct qce_sha_reqctx *rctx = ahash_request_ctx(req);
> >> + u32 flags = rctx->flags;
> >> + bool hmac = IS_SHA_HMAC(flags);
> >> + int ret;
> >> +
> >> + if (IS_SHA1(flags) || IS_SHA1_HMAC(flags)) {
> >> + struct sha1_state *state = (struct sha1_state *)in;
> >
> > Unnecessary cast from void *.
>
> Nope, "in" is "const void *". Cast is needed to avoid compiler warnings.
>

Ouch. Why are we casting away const? It should be possible to
make qce_import_common() take const state and buffer arguments?

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