From patchwork Thu Apr 20 07:38:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sumit Semwal X-Patchwork-Id: 97715 Delivered-To: patch@linaro.org Received: by 10.140.109.52 with SMTP id k49csp667476qgf; Thu, 20 Apr 2017 00:39:22 -0700 (PDT) X-Received: by 10.99.47.4 with SMTP id v4mr6670892pgv.47.1492673962392; Thu, 20 Apr 2017 00:39:22 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 203si1845905pgf.183.2017.04.20.00.39.21; Thu, 20 Apr 2017 00:39:22 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of stable-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org; spf=pass (google.com: best guess record for domain of stable-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934597AbdDTHjE (ORCPT + 6 others); Thu, 20 Apr 2017 03:39:04 -0400 Received: from mail-io0-f169.google.com ([209.85.223.169]:36792 "EHLO mail-io0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S943101AbdDTHjD (ORCPT ); Thu, 20 Apr 2017 03:39:03 -0400 Received: by mail-io0-f169.google.com with SMTP id o22so63352208iod.3 for ; Thu, 20 Apr 2017 00:39:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=nvuryFGNPGCQ0OvrpADpfSou8jt4E6kEASBeHvbi9dE=; b=I20k5yANyqukPgOmAqEBaEs8jxpx2RHGu3TTLmoENzHayj8k2zJXqzuJCil9thFftT aVXjCecBuFbfeJKFS/iIAWGIM2d2IG2iVou8uHX8esYFwxIQF8ibAK+gVb/4vty0VBke 8Z5y2/L5UWIvlhrqnIUoOKIi5dguhpA0vJWsE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=nvuryFGNPGCQ0OvrpADpfSou8jt4E6kEASBeHvbi9dE=; b=jpx9Ulb6tOGhs0wOZ7hBnoR1n6kie72e4H4gMUP3vTf5ZmNZt/XP2fu7bonjP50hpr bBLHi3llptFkIs9g7kAsD5MBZk/QT/QevP0bGBqaeXJ4Yi85jYZHkFk/7MbFePbAmOwK oAu7/LK/tKdyERUmgyRkmM0nZl2m2b2WhTGP33Rn5IN7S2OWoVaDrfzHKCR4+Ipb4Lt0 tQDS3ohYpn4ssbExU464ZrCF2xnqCAU4K4nz6cdtRIHkTT6dUD3IyY0MWhJTsCQSHqMd wcL7waJjwS0SYZbzXWS+1hhgXR5iSGGyFxAYMMbncK+tRpFZhEVXFmCc/ApRI6YZvzG7 8WCQ== X-Gm-Message-State: AN3rC/4/HtK8XFosz90a3q1CI2FEmAxLSGKDuyAuTrrGKEd36RvSBV5T 5yTnSWUewGWXPq6o X-Received: by 10.99.188.2 with SMTP id q2mr6851944pge.72.1492673941909; Thu, 20 Apr 2017 00:39:01 -0700 (PDT) Received: from phantom.lan ([106.51.225.38]) by smtp.gmail.com with ESMTPSA id t2sm8497717pfl.34.2017.04.20.00.38.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 20 Apr 2017 00:39:00 -0700 (PDT) From: Sumit Semwal To: stable@vger.kernel.org Cc: "K. Y. Srinivasan" , Greg Kroah-Hartman , Sumit Semwal Subject: [v3 PATCH for-4.4 3/7] Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg() Date: Thu, 20 Apr 2017 13:08:39 +0530 Message-Id: <1492673923-1352-4-git-send-email-sumit.semwal@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1492673923-1352-1-git-send-email-sumit.semwal@linaro.org> References: <1492673923-1352-1-git-send-email-sumit.semwal@linaro.org> Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: "K. Y. Srinivasan" [ Upstream commit 8de0d7e951826d7592e0ba1da655b175c4aa0923 ] The current delay between retries is unnecessarily high and is negatively affecting the time it takes to boot the system. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sumit Semwal --- drivers/hv/connection.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.7.4 diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 4fc2e88..2bbc530 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -429,7 +429,7 @@ int vmbus_post_msg(void *buffer, size_t buflen) union hv_connection_id conn_id; int ret = 0; int retries = 0; - u32 msec = 1; + u32 usec = 1; conn_id.asu32 = 0; conn_id.u.id = VMBUS_MESSAGE_CONNECTION_ID; @@ -462,9 +462,9 @@ int vmbus_post_msg(void *buffer, size_t buflen) } retries++; - msleep(msec); - if (msec < 2048) - msec *= 2; + udelay(usec); + if (usec < 2048) + usec *= 2; } return ret; }