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Mon, 19 Oct 2026 18:34:22 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3607ee0d391sm36624354eec.4.2026.10.19.18.34.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2026 18:34:22 -0700 (PDT) Date: Mon, 19 Oct 2026 18:34:21 -0700 From: Guenter Roeck To: Igor Velkov Cc: Wim Van Sebroeck , Chris Packham , Gregory CLEMENT , linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] watchdog: orion_wdt: stop the watchdog during system suspend Message-ID: <1cce7809-dc7c-4ea2-b985-d3ece252fdea@roeck-us.net> References: <20261012-orion-wdt-suspend-v2-0-f13cf71443ba@iav.lv> <20261012-orion-wdt-suspend-v2-2-f13cf71443ba@iav.lv> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261012-orion-wdt-suspend-v2-2-f13cf71443ba@iav.lv> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261019_183424_014939_9EF42712 X-CRM114-Status: GOOD ( 13.38 ) X-Spam-Score: -1.5 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Mon, Oct 12, 2026 at 03:46:57AM +0300, Igor Velkov wrote: > From: Igor Velkov > > The watchdog timer keeps counting across system suspend while the > userspace that pings it is frozen, so it expires and resets the system. > On a Kobol Helios4 (Armada 388) with a 60 s timeout the board resets > 47-61 s into s2idle, whether the watchdog daemon or systemd's > RuntimeWatchdogSec holds the device. > > Stop the timer on suspend and restart it on resume when it is active or > running in hardware, as sp805_wdt does. orion_wdt_start() reloads the > counter, so userspace gets a full timeout after resume. > > Assisted-by: LLM > Signed-off-by: Igor Velkov Applied. Thanks, Guenter