From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933432AbcK1RAw (ORCPT ); Mon, 28 Nov 2016 12:00:52 -0500 Received: from mail-pf0-f193.google.com ([209.85.192.193]:33969 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933400AbcK1RAo (ORCPT ); Mon, 28 Nov 2016 12:00:44 -0500 From: Aniroop Mathur To: daniel.stone@nokia.com, timo.o.karjalainen@nokia.com, felipe.balbi@nokia.com, dmitry.torokhov@gmail.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: s.samuel@samsung.com, r.mahale@samsung.com, aniroop.mathur@gmail.com, Aniroop Mathur Subject: [PATCH] Input: keyboard: lm8323 - Change msleep to usleep_range for small msecs Date: Mon, 28 Nov 2016 22:40:09 +0530 Message-Id: <1480353009-1483-1-git-send-email-a.mathur@samsung.com> X-Mailer: git-send-email 2.6.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org msleep(1~20) may not do what the caller intends, and will often sleep longer. (~20 ms actual sleep for any value given in the 1~20ms range) This is not the desired behaviour for many cases like device resume time, device suspend time, device enable time, retry logic, etc. Thus, change msleep to usleep_range for precise wakeups. Signed-off-by: Aniroop Mathur --- drivers/input/keyboard/lm8323.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/keyboard/lm8323.c b/drivers/input/keyboard/lm8323.c index 21bea52..14679e9 100644 --- a/drivers/input/keyboard/lm8323.c +++ b/drivers/input/keyboard/lm8323.c @@ -689,7 +689,7 @@ static int lm8323_probe(struct i2c_client *client, break; } - msleep(1); + usleep_range(1000, 1100); } lm8323_configure(lm); -- 2.6.2