linux-kernel - Re: [PATCH] crypto : async implementation for sha1-mb

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Message-ID: <20160621130719.GA22526@gondor.apana.org.au>
Date:	Tue, 21 Jun 2016 21:07:19 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Megha Dey <megha.dey@...el.com>
Cc:	tim.c.chen@...ux.intel.com, davem@...emloft.net,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	fenghua.yu@...el.com, Megha Dey <megha.dey@...ux.intel.com>
Subject: Re: [PATCH] crypto : async implementation for sha1-mb

On Mon, Jun 20, 2016 at 01:25:46PM -0700, Megha Dey wrote:
>
> -	desc->tfm = child;
> -	desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;  /* check this again */
> +	ahash_request_set_tfm(desc, child);
> +	ahash_request_set_callback(desc, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL);

The callback function needs to be set, or this will crash when
it returns -EINPROGRESS.

>  	if (err) {
>  		req->base.complete = rctx->complete;

This is not calling the completion function conditinoally, rather
it is trying to restore the original completion function when we
are done.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt