From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753347AbbIOJGm (ORCPT ); Tue, 15 Sep 2015 05:06:42 -0400 Received: from mail.kernel.org ([198.145.29.136]:51595 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753267AbbIOJGi (ORCPT ); Tue, 15 Sep 2015 05:06:38 -0400 From: lizf@kernel.org To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Pascal Huerst , Mark Brown , Zefan Li Subject: [PATCH 3.4 025/146] ASoC: cs4271: Increase delay time after reset Date: Tue, 15 Sep 2015 17:02:20 +0800 Message-Id: <1442307861-32031-25-git-send-email-lizf@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1442307787-31952-1-git-send-email-lizf@kernel.org> References: <1442307787-31952-1-git-send-email-lizf@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pascal Huerst 3.4.109-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit 74ff960222d90999508b4ba0d3449f796695b6d5 upstream. The delay time after a reset in the codec probe callback was too short, and did not work on certain hw because the codec needs more time to power on. This increases the delay time from 1us to 1ms. Signed-off-by: Pascal Huerst Acked-by: Brian Austin Signed-off-by: Mark Brown [lizf: Backported to 3.4: adjust context] Signed-off-by: Zefan Li --- sound/soc/codecs/cs4271.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c index f9e2bda..5405932 100644 --- a/sound/soc/codecs/cs4271.c +++ b/sound/soc/codecs/cs4271.c @@ -475,10 +475,10 @@ static int cs4271_probe(struct snd_soc_codec *codec) if (gpio_nreset >= 0) { /* Reset codec */ gpio_direction_output(gpio_nreset, 0); - udelay(1); + mdelay(1); gpio_set_value(gpio_nreset, 1); /* Give the codec time to wake up */ - udelay(1); + mdelay(1); } cs4271->gpio_nreset = gpio_nreset; -- 1.9.1