Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932257AbdGSLOm (ORCPT ); Wed, 19 Jul 2017 07:14:42 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:48240 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932187AbdGSLOj (ORCPT ); Wed, 19 Jul 2017 07:14:39 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gilad Ben-Yossef , Herbert Xu Subject: [PATCH 4.4 45/57] crypto: atmel - only treat EBUSY as transient if backlog Date: Wed, 19 Jul 2017 13:12:51 +0200 Message-Id: <20170719111251.787409565@linuxfoundation.org> X-Mailer: git-send-email 2.13.3 In-Reply-To: <20170719111249.973558472@linuxfoundation.org> References: <20170719111249.973558472@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1023 Lines: 35 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gilad Ben-Yossef commit 1606043f214f912a52195293614935811a6e3e53 upstream. The Atmel SHA driver was treating -EBUSY as indication of queueing to backlog without checking that backlog is enabled for the request. Fix it by checking request flags. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/atmel-sha.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -963,7 +963,9 @@ static int atmel_sha_finup(struct ahash_ ctx->flags |= SHA_FLAGS_FINUP; err1 = atmel_sha_update(req); - if (err1 == -EINPROGRESS || err1 == -EBUSY) + if (err1 == -EINPROGRESS || + (err1 == -EBUSY && (ahash_request_flags(req) & + CRYPTO_TFM_REQ_MAY_BACKLOG))) return err1; /*