From patchwork Sun Dec 6 07:46:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haren Myneni X-Patchwork-Id: 7778321 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Original-To: patchwork-linux-crypto@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 124CDBEEE1 for ; Sun, 6 Dec 2015 07:47:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 22FC5203ED for ; Sun, 6 Dec 2015 07:47:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 222F7203B8 for ; Sun, 6 Dec 2015 07:47:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751516AbbLFHqx (ORCPT ); Sun, 6 Dec 2015 02:46:53 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:52077 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751446AbbLFHqw (ORCPT ); Sun, 6 Dec 2015 02:46:52 -0500 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 6 Dec 2015 00:46:52 -0700 Received: from d03dlp02.boulder.ibm.com (9.17.202.178) by e31.co.us.ibm.com (192.168.1.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Sun, 6 Dec 2015 00:46:49 -0700 X-IBM-Helo: d03dlp02.boulder.ibm.com X-IBM-MailFrom: haren@linux.vnet.ibm.com X-IBM-RcptTo: linux-crypto@vger.kernel.org;linux-kernel@vger.kernel.org Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by d03dlp02.boulder.ibm.com (Postfix) with ESMTP id 1D03E3E40041; Sun, 6 Dec 2015 00:46:49 -0700 (MST) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id tB67km7K26411014; Sun, 6 Dec 2015 00:46:48 -0700 Received: from d03av01.boulder.ibm.com (localhost [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id tB67klbf025217; Sun, 6 Dec 2015 00:46:48 -0700 Received: from [9.70.82.162] ([9.70.82.162]) by d03av01.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id tB67klNO025197; Sun, 6 Dec 2015 00:46:47 -0700 Subject: crypto/nx842: Ignore queue overflow informative error From: Haren Myneni To: herbert@gondor.apana.org.au, davem@davemloft.net, ddstreet@ieee.org, mpe@ellerman.id.au, pair@us.ibm.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: hbabu@us.ibm.com Date: Sat, 05 Dec 2015 23:46:44 -0800 Message-ID: <1449388004.2096.12.camel@hbabu-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15120607-8236-0000-0000-0000141E8E1A Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP NX842 coprocessor sets bit 3 if queue is overflow. It is just for information to the user. So the driver prints this informative message and ignores it. Signed-off-by: Haren Myneni --- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/powerpc/include/asm/icswx.h b/arch/powerpc/include/asm/icswx.h index 9f8402b..d1a2a2d 100644 --- a/arch/powerpc/include/asm/icswx.h +++ b/arch/powerpc/include/asm/icswx.h @@ -164,6 +164,7 @@ struct coprocessor_request_block { #define ICSWX_INITIATED (0x8) #define ICSWX_BUSY (0x4) #define ICSWX_REJECTED (0x2) +#define ICSWX_BIT3 (0x1) /* undefined or set from XERSO. */ static inline int icswx(__be32 ccw, struct coprocessor_request_block *crb) { diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c index 9ef51fa..321b8e8 100644 --- a/drivers/crypto/nx/nx-842-powernv.c +++ b/drivers/crypto/nx/nx-842-powernv.c @@ -442,6 +442,15 @@ static int nx842_powernv_function(const unsigned char *in, unsigned int inlen, (unsigned int)ccw, (unsigned int)be32_to_cpu(crb->ccw)); + /* + * NX842 coprocessor uses 3rd bit to report queue overflow which is + * not an error, just for information to user. So, ignore this bit. + */ + if (ret & ICSWX_BIT3) { + pr_info_ratelimited("842 coprocessor queue overflow\n"); + ret &= ~ICSWX_BIT3; + } + switch (ret) { case ICSWX_INITIATED: ret = wait_for_csb(wmem, csb);