From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D079C169C4 for ; Tue, 12 Feb 2019 01:33:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2599721855 for ; Tue, 12 Feb 2019 01:33:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727246AbfBLBdL (ORCPT ); Mon, 11 Feb 2019 20:33:11 -0500 Received: from smtp-out-no.shaw.ca ([64.59.134.12]:41574 "EHLO smtp-out-no.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726300AbfBLBdL (ORCPT ); Mon, 11 Feb 2019 20:33:11 -0500 Received: from tethys.mmayer.net ([70.68.144.247]) by shaw.ca with ESMTP id tMoog3t3S8uQmtMopgllL1; Mon, 11 Feb 2019 18:25:04 -0700 X-Authority-Analysis: v=2.3 cv=XKpOtjpE c=1 sm=1 tr=0 a=5Vvn7CJLxh9yo+qVPaC6cg==:117 a=5Vvn7CJLxh9yo+qVPaC6cg==:17 a=CFTnQlWoA9kA:10 a=Q-fNiiVtAAAA:8 a=HXjB05T0r80QQ8cVDO8A:9 a=rT-qB4xickcA:10 a=Fp8MccfUoT0GBdDC_Lng:22 Received: by tethys.mmayer.net (Postfix, from userid 501) id 65126300BE54A8; Mon, 11 Feb 2019 17:25:02 -0800 (PST) From: Markus Mayer To: Brian Norris , Florian Fainelli , Gregory Fong Cc: Markus Mayer , Broadcom Kernel List , ARM Kernel List , Linux Kernel Mailing List Subject: [PATCH 1/3] soc: brcmstb: dpfe: use msleep() over udelay() Date: Mon, 11 Feb 2019 17:24:41 -0800 Message-Id: <20190212012443.21819-2-code@mmayer.net> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190212012443.21819-1-code@mmayer.net> References: <20190212012443.21819-1-code@mmayer.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfOa8J4srZrEhN50tTn1MOEt4JADVRPQ3WY0JU3yK0hx3Bs2r/IhI2aBu2sI5gxJnjcBuj3wpyTeNKOu94PUw2w6OzP5xySKUlezUWW3MSHK3owKrpfvF 5aEDVxgG2b9ynBYcu3BNMyLxfM3sFhBqZs0nEr2Gc+GzUXmLPofEqJh89F6tF/tkJrqCbM4XiGF2ATVXAC0ZH4JuvnivbeSgUfgzlcZea3LvwT+CXWl9imps 0+K8JWRAz1b1Ni+M4JWyqQBhQpilGwKZpH/8l3cfQGJODj6gTBLuU1Zy/Hr0P6BKsSrhFwcFs8bVqQfI/UwvL5P2WGEIjR9sn+GASnFeNjc99EczLOfmU7AX TJcKLS1bGi18Tm1eRCUrhI9mxVmvrLwVoog+oM3VYa8Lv5zqxAiFGa1aXrLUVo9ZZN4BVKn/7jldeblm1fTNOiNiKp+kZw== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Mayer To be more "scheduler friendly", we use msleep() rather than udelay() while we wait for the DCPU to respond. Signed-off-by: Markus Mayer --- drivers/memory/brcmstb_dpfe.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/memory/brcmstb_dpfe.c b/drivers/memory/brcmstb_dpfe.c index 04599eccd604..8e1ccdb0e59d 100644 --- a/drivers/memory/brcmstb_dpfe.c +++ b/drivers/memory/brcmstb_dpfe.c @@ -111,7 +111,7 @@ #define DPFE_MSG_TYPE_COMMAND 1 #define DPFE_MSG_TYPE_RESPONSE 2 -#define DELAY_LOOP_MAX 200000 +#define DELAY_LOOP_MAX 1000 enum dpfe_msg_fields { MSG_HEADER, @@ -323,7 +323,7 @@ static int __send_command(struct private_data *priv, unsigned int cmd, resp = readl_relaxed(regs + REG_TO_HOST_MBOX); if (resp > 0) break; - udelay(5); + msleep(1); } if (i == DELAY_LOOP_MAX) { -- 2.17.1