From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49104 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753668AbcKULl2 (ORCPT ); Mon, 21 Nov 2016 06:41:28 -0500 Subject: Patch "mfd: intel-lpss: Do not put device in reset state on suspend" has been added to the 4.8-stable tree To: azhar.shaikh@intel.com, andriy.shevchenko@linux.intel.com, gregkh@linuxfoundation.org, lee.jones@linaro.org, mika.westerberg@linux.intel.com Cc: , From: Date: Mon, 21 Nov 2016 12:41:20 +0100 Message-ID: <1479728480117155@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mfd: intel-lpss: Do not put device in reset state on suspend to the 4.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mfd-intel-lpss-do-not-put-device-in-reset-state-on-suspend.patch and it can be found in the queue-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 274e43edcda6f709aa67e436b3123e45a6270923 Mon Sep 17 00:00:00 2001 From: Azhar Shaikh Date: Wed, 12 Oct 2016 10:12:20 -0700 Subject: mfd: intel-lpss: Do not put device in reset state on suspend From: Azhar Shaikh commit 274e43edcda6f709aa67e436b3123e45a6270923 upstream. Commit 41a3da2b8e163 ("mfd: intel-lpss: Save register context on suspend") saved the register context while going to suspend and also put the device in reset state. Due to the resetting of device, system cannot enter S3/S0ix states when no_console_suspend flag is enabled. The system and serial console both hang. The resetting of device is not needed while going to suspend. Hence remove this code. Fixes: 41a3da2b8e163 ("mfd: intel-lpss: Save register context on suspend") Signed-off-by: Azhar Shaikh Acked-by: Mika Westerberg Reviewed-by: Andy Shevchenko Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman --- drivers/mfd/intel-lpss.c | 3 --- 1 file changed, 3 deletions(-) --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -502,9 +502,6 @@ int intel_lpss_suspend(struct device *de for (i = 0; i < LPSS_PRIV_REG_COUNT; i++) lpss->priv_ctx[i] = readl(lpss->priv + i * 4); - /* Put the device into reset state */ - writel(0, lpss->priv + LPSS_PRIV_RESETS); - return 0; } EXPORT_SYMBOL_GPL(intel_lpss_suspend); Patches currently in stable-queue which might be from azhar.shaikh@intel.com are queue-4.8/mfd-intel-lpss-do-not-put-device-in-reset-state-on-suspend.patch