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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 661A6C432C3 for ; Sat, 16 Nov 2019 15:56:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 331402168B for ; Sat, 16 Nov 2019 15:56:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919787; bh=6KyFAcSvoN6cDs6QRqCUbq0QmDU347rw7jYBKRa41zk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=NbzJZ6QPbGWrzS43u/K8Z8eeyUZirqF0kq0Xq1nroCxuRQ5ecFFppUJ4ZmYiQ1O7A FRlydW9imTtnrQfO4TAzbIQe8BzKwbCVk6HqU+E3WPR9b4XLoUx3QL1QIMCEB+taVD tubj+4JG/F+fQsqmnKbTueueFmJ/hyHRhGZGn6Z0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731675AbfKPP4Z (ORCPT ); Sat, 16 Nov 2019 10:56:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:37566 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728880AbfKPPz1 (ORCPT ); Sat, 16 Nov 2019 10:55:27 -0500 Received: from sasha-vm.mshome.net (unknown [50.234.116.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 229582192C; Sat, 16 Nov 2019 15:55:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919727; bh=6KyFAcSvoN6cDs6QRqCUbq0QmDU347rw7jYBKRa41zk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JkXdmQmr4JZxKgCIIGqrbTJvlvHMo7t/ZW6Lgiw4vGuP5MxYmMBBcpWbZ2LZ4JQDJ amDgqJNJx+BnXM1YVLYIMLz81+kp80XdCUNlC08pCHBnqoWLYmJZlYUOwNIOQt635C e66pkiZwz1bUahIFZK0d8q2ojsLsV6GmtQYxxxBY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Shivasharan S , "Martin K . Petersen" , Sasha Levin , megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 68/77] scsi: megaraid_sas: Fix msleep granularity Date: Sat, 16 Nov 2019 10:53:30 -0500 Message-Id: <20191116155339.11909-68-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191116155339.11909-1-sashal@kernel.org> References: <20191116155339.11909-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shivasharan S [ Upstream commit 9155cf30a3c4ef97e225d6daddf9bd4b173267e8 ] In megasas_transition_to_ready() driver waits 180seconds for controller to change FW state. Here we are calling msleep(1) in a loop for this. As explained in timers-howto.txt, msleep(1) will actually sleep longer than 1ms. If a faulty controller is connected, we will end up waiting for much more than 180 seconds causing unnecessary delays during load. Change the granularity of msleep() call from 1ms to 1000ms. Signed-off-by: Shivasharan S Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/megaraid/megaraid_sas_base.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 5e0bac8de6381..7be968f60b590 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3585,12 +3585,12 @@ megasas_transition_to_ready(struct megasas_instance *instance, int ocr) /* * The cur_state should not last for more than max_wait secs */ - for (i = 0; i < (max_wait * 1000); i++) { + for (i = 0; i < max_wait; i++) { curr_abs_state = instance->instancet-> read_fw_status_reg(instance->reg_set); if (abs_state == curr_abs_state) { - msleep(1); + msleep(1000); } else break; } -- 2.20.1