Commit 83f619f3 authored by Steffen Klassert's avatar Steffen Klassert Committed by Herbert Xu
Browse files

padata: make padata_do_parallel to return zero on success 



To return -EINPROGRESS on success in padata_do_parallel was
considered to be odd. This patch changes this to return zero
on success. Also the only user of padata, pcrypt is adapted to
convert a return of zero to -EINPROGRESS within the crypto layer.
This also removes the pcrypt fallback if padata_do_parallel
was called on a not running padata instance as we can't handle it
anymore. This fallback was unused, so it's save to remove it.

Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 33e54450

crypto/pcrypt.c

+6 −12
Original line number Diff line number Diff line
@@ -143,10 +143,8 @@ static int pcrypt_aead_encrypt(struct aead_request *req) 
	aead_request_set_assoc(creq, req->assoc, req->assoclen);



	err = pcrypt_do_parallel(padata, &ctx->cb_cpu, pcrypt_enc_padata);

	if (err)

		return err;

	else

		err = crypto_aead_encrypt(creq);

	if (!err)

		return -EINPROGRESS;



	return err;

}
@@ -187,10 +185,8 @@ static int pcrypt_aead_decrypt(struct aead_request *req) 
	aead_request_set_assoc(creq, req->assoc, req->assoclen);



	err = pcrypt_do_parallel(padata, &ctx->cb_cpu, pcrypt_dec_padata);

	if (err)

		return err;

	else

		err = crypto_aead_decrypt(creq);

	if (!err)

		return -EINPROGRESS;



	return err;

}
@@ -233,10 +229,8 @@ static int pcrypt_aead_givencrypt(struct aead_givcrypt_request *req) 
	aead_givcrypt_set_giv(creq, req->giv, req->seq);



	err = pcrypt_do_parallel(padata, &ctx->cb_cpu, pcrypt_enc_padata);

	if (err)

		return err;

	else

		err = crypto_aead_givencrypt(creq);

	if (!err)

		return -EINPROGRESS;



	return err;

}

kernel/padata.c

+5 −6
Original line number Diff line number Diff line
@@ -111,10 +111,13 @@ int padata_do_parallel(struct padata_instance *pinst, 


	pd = rcu_dereference(pinst->pd);



	err = 0;

	err = -EINVAL;

	if (!(pinst->flags & PADATA_INIT))

		goto out;



	if (!cpumask_test_cpu(cb_cpu, pd->cpumask))

		goto out;



	err =  -EBUSY;

	if ((pinst->flags & PADATA_RESET))

		goto out;
@@ -122,11 +125,7 @@ int padata_do_parallel(struct padata_instance *pinst, 
	if (atomic_read(&pd->refcnt) >= MAX_OBJ_NUM)

		goto out;



	err = -EINVAL;

	if (!cpumask_test_cpu(cb_cpu, pd->cpumask))

		goto out;



	err = -EINPROGRESS;

	err = 0;

	atomic_inc(&pd->refcnt);

	padata->pd = pd;

	padata->cb_cpu = cb_cpu;

CRA Git | Maintained and supported by SUSTech CRA and CCSE