From patchwork Mon Feb 11 11:46:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Horia Geanta X-Patchwork-Id: 10805549 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E207C184E for ; Mon, 11 Feb 2019 11:46:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D1FBC29BFC for ; Mon, 11 Feb 2019 11:46:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C6BD229C02; Mon, 11 Feb 2019 11:46:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 849BE29BFE for ; Mon, 11 Feb 2019 11:46:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726975AbfBKLqc (ORCPT ); Mon, 11 Feb 2019 06:46:32 -0500 Received: from inva020.nxp.com ([92.121.34.13]:46456 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726041AbfBKLqc (ORCPT ); Mon, 11 Feb 2019 06:46:32 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 2B5201A034B; Mon, 11 Feb 2019 12:46:31 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 1F3841A01B7; Mon, 11 Feb 2019 12:46:31 +0100 (CET) Received: from enigma.ea.freescale.net (enigma.ea.freescale.net [10.171.81.110]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id B7E43205FA; Mon, 11 Feb 2019 12:46:30 +0100 (CET) From: =?utf-8?q?Horia_Geant=C4=83?= To: Herbert Xu Cc: "David S. Miller" , Aymen Sghaier , linux-crypto@vger.kernel.org, Leo Li , Roy Pledge , Vakul Garg Subject: [PATCH 3/3] crypto: caam/qi2 - relax busy polling while enqueuing FDs Date: Mon, 11 Feb 2019 13:46:14 +0200 Message-Id: <20190211114614.24748-4-horia.geanta@nxp.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20190211114614.24748-1-horia.geanta@nxp.com> References: <20190211114614.24748-1-horia.geanta@nxp.com> MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add cpu_relax() in the loop that tries to enqueue the FDs. Signed-off-by: Horia Geantă --- drivers/crypto/caam/caamalg_qi2.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c index 6a6a508f5fd2..c2c1abc68f81 100644 --- a/drivers/crypto/caam/caamalg_qi2.c +++ b/drivers/crypto/caam/caamalg_qi2.c @@ -5277,6 +5277,8 @@ int dpaa2_caam_enqueue(struct device *dev, struct caam_request *req) &fd); if (err != -EBUSY) break; + + cpu_relax(); } if (unlikely(err)) {