From patchwork Fri Feb 11 16:09:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 12743608 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14531C433F5 for ; Fri, 11 Feb 2022 16:09:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350430AbiBKQJm (ORCPT ); Fri, 11 Feb 2022 11:09:42 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:39916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349766AbiBKQJk (ORCPT ); Fri, 11 Feb 2022 11:09:40 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A464721D; Fri, 11 Feb 2022 08:09:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644595779; x=1676131779; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/s3WrC1VyQ0ot4B6GyjX4d2vaEYezW/7+rzPNjdE6R8=; b=Ydl9q5gtIoDWZbS9L71ryu/pqgZW6kwgNinFHfdUXs9G0Qgy2p9hXMLz QbGSECEtCjoYOBwW4oQLEDbitoPHLOo+6lUVYUJCukIhReZSjKLy0NGnR yIf8AtKpMqH9f2tS3EVd45tSvdVubsEcjBpHidJp1wm2QcDAp9xmaoZf9 g3JZnhRak1NIPcx65DVW5aPMJC9TIYScl9ksPiXTk5FO2r46Gj8FwOGoy hRiX4BJ00oLk6jH0JPXHFmSBrQUY2N8yTLinWkj3Tx0+KtNzXVoaDEnjh pQ/FjrlGZY8tjf8KB7GhN1VWcwATOWPF6jtzPlx4wHZOHD2z9eVLMh2Mu w==; X-IronPort-AV: E=McAfee;i="6200,9189,10254"; a="249703806" X-IronPort-AV: E=Sophos;i="5.88,361,1635231600"; d="scan'208";a="249703806" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Feb 2022 08:09:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,361,1635231600"; d="scan'208";a="630393689" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga002.fm.intel.com with ESMTP; 11 Feb 2022 08:09:38 -0800 From: Srinivas Pandruvada To: rafael@kernel.org, lenb@kernel.org Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH v4 1/6] ACPI / fan: Fix error reporting to user space Date: Fri, 11 Feb 2022 08:09:27 -0800 Message-Id: <20220211160932.3221873-2-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220211160932.3221873-1-srinivas.pandruvada@linux.intel.com> References: <20220211160932.3221873-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org When user get/set cur_state fails, it should be some negative error value instead of whatever returned by acpi_evaluate_object() or from acpi_execute_simple_method(). The return value from these apis is some positive values greater than 0. For example if AE_NOT_FOUND is returned it will be "5". In other ACPI drivers, -ENODEV is returned when ACPI_FAILURE(status) is true. Do the same thing here for thermal sysfs callbacks for get and set for failures. Signed-off-by: Srinivas Pandruvada --- drivers/acpi/fan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 5cd0ceb50bc8..098d64568d6d 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -107,7 +107,7 @@ static int fan_get_state_acpi4(struct acpi_device *device, unsigned long *state) status = acpi_evaluate_object(device->handle, "_FST", NULL, &buffer); if (ACPI_FAILURE(status)) { dev_err(&device->dev, "Get fan state failed\n"); - return status; + return -ENODEV; } obj = buffer.pointer; @@ -195,7 +195,7 @@ static int fan_set_state_acpi4(struct acpi_device *device, unsigned long state) fan->fps[state].control); if (ACPI_FAILURE(status)) { dev_dbg(&device->dev, "Failed to set state by _FSL\n"); - return status; + return -ENODEV; } return 0;