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 F0EE2C433E0 for ; Thu, 18 Jun 2020 01:35:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1A832192A for ; Thu, 18 Jun 2020 01:35:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592444112; bh=8W6kvC6JpX2I97mxdcnHI2EdMQdoHORQS6HfrtQPFY8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nxFTNERmkMrqaZL6UiqopTJDCfQgyA35vPQoUjSWRCG32s4YUK9+3FtjtrFCMVQIi jDW/WIBACIpPO+ZlNsedpRi8Iw9F2dk+BU98iGoLRic2sa8m8l1BewQRNZsIYt2QfE KWo1TRX61D6P6TU2FiboTTuAwSzhrJD5JlIqbFxA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732863AbgFRBcM (ORCPT ); Wed, 17 Jun 2020 21:32:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:39090 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732329AbgFRB3f (ORCPT ); Wed, 17 Jun 2020 21:29:35 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 1A07522204; Thu, 18 Jun 2020 01:29:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443775; bh=8W6kvC6JpX2I97mxdcnHI2EdMQdoHORQS6HfrtQPFY8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IxkzpctLcjPymWc4lK78L306JESnpUrNngiQhOBoAq1Fiet48rcCBpaxb21nMPkM+ 0rtzmJb7M4/ZFGL1qM1v/SN/mvUMDS8UFNzn+EAXBvMRO6fof7/x4lvx+rgeLCMUN4 EOfzHzEBOI9XG+RJeHno2JSq0nnNCRZmeo0DBH40= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Stefan Riedmueller , Guenter Roeck , Adam Thomson , Wim Van Sebroeck , Sasha Levin , linux-watchdog@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 58/80] watchdog: da9062: No need to ping manually before setting timeout Date: Wed, 17 Jun 2020 21:27:57 -0400 Message-Id: <20200618012819.609778-58-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012819.609778-1-sashal@kernel.org> References: <20200618012819.609778-1-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: Stefan Riedmueller [ Upstream commit a0948ddba65f4f6d3cfb5e2b84685485d0452966 ] There is actually no need to ping the watchdog before disabling it during timeout change. Disabling the watchdog already takes care of resetting the counter. This fixes an issue during boot when the userspace watchdog handler takes over and the watchdog is already running. Opening the watchdog in this case leads to the first ping and directly after that without the required heartbeat delay a second ping issued by the set_timeout call. Due to the missing delay this resulted in a reset. Signed-off-by: Stefan Riedmueller Reviewed-by: Guenter Roeck Reviewed-by: Adam Thomson Link: https://lore.kernel.org/r/20200403130728.39260-3-s.riedmueller@phytec.de Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Sasha Levin --- drivers/watchdog/da9062_wdt.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/watchdog/da9062_wdt.c b/drivers/watchdog/da9062_wdt.c index daeb645fcea8..519419136ce8 100644 --- a/drivers/watchdog/da9062_wdt.c +++ b/drivers/watchdog/da9062_wdt.c @@ -94,11 +94,6 @@ static int da9062_wdt_update_timeout_register(struct da9062_watchdog *wdt, unsigned int regval) { struct da9062 *chip = wdt->hw; - int ret; - - ret = da9062_reset_watchdog_timer(wdt); - if (ret) - return ret; return regmap_update_bits(chip->regmap, DA9062AA_CONTROL_D, -- 2.25.1