From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752843AbbJLVXH (ORCPT ); Mon, 12 Oct 2015 17:23:07 -0400 Received: from mail-wi0-f176.google.com ([209.85.212.176]:38473 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752812AbbJLVXE (ORCPT ); Mon, 12 Oct 2015 17:23:04 -0400 From: Peter Senna Tschudin To: gregkh@linuxfoundation.org, peter.senna@gmail.com, sergei.shtylyov@cogentembedded.com, jkosina@suse.cz, rdunlap@infradead.org, balbi@ti.com, standby24x7@gmail.com, chris@rorvick.com, stern@rowland.harvard.edu, john453@faraday-tech.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/9] usb/host/fotg210: replace msleep by usleep_range Date: Mon, 12 Oct 2015 23:22:37 +0200 Message-Id: <1444684960-8088-7-git-send-email-peter.senna@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1444684960-8088-1-git-send-email-peter.senna@gmail.com> References: <1442847678-7970-1-git-send-email-peter.senna@gmail.com> <1444684960-8088-1-git-send-email-peter.senna@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org msleep under 20ms can result in sleeping up to 20ms, which may not be intended. Replace msleep(5) by usleep_range(5000, 10000). The range of 5 ms is to reduce the chances of creating an interrupt while reducing the maximum wait time in 50%. Signed-off-by: Peter Senna Tschudin --- drivers/usb/host/fotg210-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index ae3806d..5413358 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -5085,7 +5085,7 @@ static int fotg210_run(struct usb_hcd *hcd) fotg210->rh_state = FOTG210_RH_RUNNING; /* unblock posted writes */ fotg210_readl(fotg210, &fotg210->regs->command); - msleep(5); + usleep_range(5000, 10000); up_write(&ehci_cf_port_reset_rwsem); fotg210->last_periodic_enable = ktime_get_real(); -- 2.1.0