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[209.132.180.67]) by mx.google.com with ESMTP id v57si7387285edc.171.2019.09.23.15.30.48; Mon, 23 Sep 2019 15:31:11 -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=pass header.i=@kernel.org header.s=default header.b=CK9Ppmrm; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391685AbfIVSsf (ORCPT + 99 others); Sun, 22 Sep 2019 14:48:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:45052 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391522AbfIVSsT (ORCPT ); Sun, 22 Sep 2019 14:48:19 -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 6FBA5208C2; Sun, 22 Sep 2019 18:48:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178098; bh=MoJuAFD5H01r8aUKRg6WQ0qWyaX5xkkJmQOMh7mNsM0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CK9PpmrmASZEHs1lRI3pFS3s3m9uHshvE542xD+koYXLrCcquOpIrL6K1T1odurVt vSI5Lo5vsBgU0C7Qor2GNi8VETpHW8cC/NHBppiQoDXo206ZKQYsZJ6RUwPsiohnd/ srVunzkHg1yqTcdtRgf+HPz4C3IGmC2zQGvzmLuk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wang Shenran , Guenter Roeck , Sasha Levin , linux-hwmon@vger.kernel.org Subject: [PATCH AUTOSEL 5.3 161/203] hwmon: (acpi_power_meter) Change log level for 'unsafe software power cap' Date: Sun, 22 Sep 2019 14:43:07 -0400 Message-Id: <20190922184350.30563-161-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922184350.30563-1-sashal@kernel.org> References: <20190922184350.30563-1-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: Wang Shenran [ Upstream commit 6e4d91aa071810deac2cd052161aefb376ecf04e ] At boot time, the acpi_power_meter driver logs the following error level message: "Ignoring unsafe software power cap". Having read about it from a few sources, it seems that the error message can be quite misleading. While the message can imply that Linux is ignoring the fact that the system is operating in potentially dangerous conditions, the truth is the driver found an ACPI_PMC object that supports software power capping. The driver simply decides not to use it, perhaps because it doesn't support the object. The best solution is probably changing the log level from error to warning. All sources I have found, regarding the error, have downplayed its significance. There is not much of a reason for it to be on error level, while causing potential confusions or misinterpretations. Signed-off-by: Wang Shenran Link: https://lore.kernel.org/r/20190724080110.6952-1-shenran268@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin --- drivers/hwmon/acpi_power_meter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c index 6ba1a08253f0a..4cf25458f0b95 100644 --- a/drivers/hwmon/acpi_power_meter.c +++ b/drivers/hwmon/acpi_power_meter.c @@ -681,8 +681,8 @@ static int setup_attrs(struct acpi_power_meter_resource *resource) if (resource->caps.flags & POWER_METER_CAN_CAP) { if (!can_cap_in_hardware()) { - dev_err(&resource->acpi_dev->dev, - "Ignoring unsafe software power cap!\n"); + dev_warn(&resource->acpi_dev->dev, + "Ignoring unsafe software power cap!\n"); goto skip_unsafe_cap; } -- 2.20.1