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[209.132.180.67]) by mx.google.com with ESMTP id 92si261430plf.299.2019.06.06.15.33.47; Thu, 06 Jun 2019 15:34:03 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@gmail.com header.s=20161025 header.b=QQAZ7N8H; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728091AbfFFVR7 (ORCPT + 99 others); Thu, 6 Jun 2019 17:17:59 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:33731 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727187AbfFFVR7 (ORCPT ); Thu, 6 Jun 2019 17:17:59 -0400 Received: by mail-pl1-f193.google.com with SMTP id g21so1425152plq.0; Thu, 06 Jun 2019 14:17:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=mP7r3Ph0TJUeY2QgBywLa5kKt0/iqIMTXJw+IqZdG5c=; b=QQAZ7N8H8c+5Ltu+ZGIdxyDkMMoKCiVPm/qiYn/zzSn25b2uU7hCOD6mZNfokt2ms8 YPclSKzjHC4oTggIKEBy7liIzJ04zM7X6ylCESyJWmj6kvjTetXr0izfzYGs9T3OdGuG 5/r0CZuH/W6Na2nPhB0DgbFu3RKGQYdtrzrevm6dBW2/B9RDKldxsPDT4+/uNnWQM5c9 T/hYcfAxmIGyGWtoGYpE+gzQyQmZ11Bxzpe6wKvXrby9WYbLcRM52p0fbB29e42EC2jO 2fc/xkACsf/zHoKWsbrpkH7JL5oQgyvTDJoZYUx+gZaHfljmNquU5eIBL5+FSjfx2pca hGVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=mP7r3Ph0TJUeY2QgBywLa5kKt0/iqIMTXJw+IqZdG5c=; b=cWZDXvfEyiNXr4BcSkb40Buh0QFCnzhuuSvishqJC3H5yeMHUN9LWlOK8GxMjtaa+w +JOyN4R2vO1AkdIu4gP7u9FPe4K8N9/qxvauruIifsoFvfZ6ynkhfNsYBRIODxlljGco eoGMo+48A9zSqPbp3jsPcuE2fEf1J6z17gjheDMslnwVlo2r4IjeRWgmexSJUPmh2c2e k2iTjCr2C3+hfGPAoa4Bw7ZSJex5+7pW0ToR234awn10RT5CiIIsxspsAx1B/U3w7uqS ld5WKmM2PjKc7iuoneRqGYcwaOEBbpmyFgfJZ7sWro3/WZPPSgnEwScuLaNufmp57nb9 IJbA== X-Gm-Message-State: APjAAAXlKRG7JIFggIspXexge8i7u186yRmQGTCsjlp5U0OBmHI2x/Pk k3DHp6T0EwR+GSWAHzkfqTKZQmxw X-Received: by 2002:a17:902:b18f:: with SMTP id s15mr53750306plr.44.1559855878548; Thu, 06 Jun 2019 14:17:58 -0700 (PDT) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id v23sm61897pff.185.2019.06.06.14.17.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Jun 2019 14:17:58 -0700 (PDT) Date: Thu, 6 Jun 2019 14:17:57 -0700 From: Guenter Roeck To: Jerry Hoemann Cc: wim@linux-watchdog.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, mironov.ivan@gmail.com, rasmus.villemoes@prevas.dk Subject: Re: [PATCH 2/6] watchdog/hpwdt: Advertize max_hw_heartbeat_ms Message-ID: <20190606211757.GA1299@roeck-us.net> References: <1558126783-4877-1-git-send-email-jerry.hoemann@hpe.com> <1558126783-4877-3-git-send-email-jerry.hoemann@hpe.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1558126783-4877-3-git-send-email-jerry.hoemann@hpe.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 17, 2019 at 02:59:39PM -0600, Jerry Hoemann wrote: > Set max_hw_heartbeat_ms instead of max_timeout so that user client can > set timeout range in excess of what the underlying hardware supports. > > Signed-off-by: Jerry Hoemann Reviewed-by: Guenter Roeck > --- > drivers/watchdog/hpwdt.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c > index 8c49f13..9f7a370 100644 > --- a/drivers/watchdog/hpwdt.c > +++ b/drivers/watchdog/hpwdt.c > @@ -62,9 +62,9 @@ > static int hpwdt_start(struct watchdog_device *wdd) > { > int control = 0x81 | (pretimeout ? 0x4 : 0); > - int reload = SECS_TO_TICKS(wdd->timeout); > + int reload = SECS_TO_TICKS(min(wdd->timeout, wdd->max_hw_heartbeat_ms/1000)); > > - dev_dbg(wdd->parent, "start watchdog 0x%08x:0x%02x\n", reload, control); > + dev_dbg(wdd->parent, "start watchdog 0x%08x:0x%08x:0x%02x\n", wdd->timeout, reload, control); > iowrite16(reload, hpwdt_timer_reg); > iowrite8(control, hpwdt_timer_con); > > @@ -91,9 +91,9 @@ static int hpwdt_stop_core(struct watchdog_device *wdd) > > static int hpwdt_ping(struct watchdog_device *wdd) > { > - int reload = SECS_TO_TICKS(wdd->timeout); > + int reload = SECS_TO_TICKS(min(wdd->timeout, wdd->max_hw_heartbeat_ms/1000)); > > - dev_dbg(wdd->parent, "ping watchdog 0x%08x\n", reload); > + dev_dbg(wdd->parent, "ping watchdog 0x%08x:0x%08x\n", wdd->timeout, reload); > iowrite16(reload, hpwdt_timer_reg); > > return 0; > @@ -208,9 +208,9 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs) > .info = &ident, > .ops = &hpwdt_ops, > .min_timeout = 1, > - .max_timeout = HPWDT_MAX_TIMER, > .timeout = DEFAULT_MARGIN, > .pretimeout = PRETIMEOUT_SEC, > + .max_hw_heartbeat_ms = HPWDT_MAX_TIMER * 1000, > }; > >