From patchwork Sun Jul 26 22:00:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guenter Roeck X-Patchwork-Id: 1336560 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=lZIAhLjL; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BFH2h6rdYz9sRX for ; Mon, 27 Jul 2020 08:01:32 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727095AbgGZWBM (ORCPT ); Sun, 26 Jul 2020 18:01:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726253AbgGZWBL (ORCPT ); Sun, 26 Jul 2020 18:01:11 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50BAFC0619D2; Sun, 26 Jul 2020 15:01:10 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id w17so7025552ply.11; Sun, 26 Jul 2020 15:01:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=p2ZGaEvqbBo3caD5sMA/QnrK4wKw7E7gyzjsO5Ns6y0=; b=lZIAhLjLmirYDu8HeccJ5MDOHmQHenXob0dzJmZAaNgjBzX9AJfPp/L8TNC3fKDjQq vWViEXVNEJqJdnv5bkDfYQvF2D/LVThVUH4jtorm03bW3Qf3XV1soMh6OuCraCZ+FlEQ +SfghS1kCSBLwXhjTC5BYTDNQb6K+SKriJpDZ57FiZXohRbUJX+qXNkR+TQUpfo/FCGG yuCa5mF2O3VBrMRL0TLzUqYW+9nhOaDUTpM+mtCDy6hMwrM786A8AAwBLwDwKegj0v2h kV1AiZdRJfDrHR+8amqAJ/eYyvzxNrU+gZte3cuaNdDqaxctYUx2vM6vy48X9NAUzLV1 g9BQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=p2ZGaEvqbBo3caD5sMA/QnrK4wKw7E7gyzjsO5Ns6y0=; b=oOXgXvsM7QJtRxY2lwY2e9ZlAWCrEHUn9t1rKi9zrGFTlpn7wCmBjcGezJ7kD6AONE fPE7sgrtcKfaXK95bWQek4gkK/b2lkxdddUEzYRCIDjMuY99sRGV+cs97LohvHl1V6Pk ASOA3bMP68YoL5/SYngHQ3r9dZ6b1OTTyMJ3VuCHDAIWxw3uATtVpM/1ZDuQwWO4PhW7 xN1NGV+G+AYJH3FZ3RjpsnvV2RLke7f6+QMk+mcAaNcv6sEszYTIWlfO+72w71rbhD4z h08X1UHu8pI9Eavv+X1KMK2KznGicisC6OnZGdljmLD0jNrV61j23J3APyrOQbjXGbdc QK7w== X-Gm-Message-State: AOAM530CLuVEQ0GuXdm71Rp1kKqwWPiNu1WJii9Zb3YZnS3SU+iVj4mu y35jNw3BYNO9z0wP43N/osU= X-Google-Smtp-Source: ABdhPJzQhsWHwHIFLQVZNcXrpBs7Ty5n/9Rh3z/f/4DCVt5kvNDUdml+X9+STWqMiPbzGP4KB+zJeA== X-Received: by 2002:a17:90a:c207:: with SMTP id e7mr15997035pjt.49.1595800869857; Sun, 26 Jul 2020 15:01:09 -0700 (PDT) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id a9sm12654566pfr.103.2020.07.26.15.01.09 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 26 Jul 2020 15:01:09 -0700 (PDT) From: Guenter Roeck To: Enric Balletbo i Serra Cc: Jonathan Cameron , Benson Leung , Dmitry Torokhov , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Gwendal Grignou , Brian Norris , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, Guenter Roeck , Yu-Hsuan Hsu , Prashant Malani Subject: [PATCH v3 2/6] cros_ec_lightbar: Accept more error codes from cros_ec_cmd_xfer_status Date: Sun, 26 Jul 2020 15:00:57 -0700 Message-Id: <20200726220101.29059-3-linux@roeck-us.net> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200726220101.29059-1-linux@roeck-us.net> References: <20200726220101.29059-1-linux@roeck-us.net> Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Since commit c5cd2b47b203 ("platform/chrome: cros_ec_proto: Report command not supported") we can no longer assume that cros_ec_cmd_xfer_status() reports -EPROTO for all errors returned by the EC itself. A follow-up patch will change cros_ec_cmd_xfer_status() to report additional errors reported by the EC as distinguished Linux error codes. Handle this change by no longer assuming that -EPROTO is used to report all errors returned by the EC itself. Since errors reported by the EC are already reported in text form through sysfs attributes, extend this form of error reporting to all errors reported by cros_ec_cmd_xfer_status(). Cc: Gwendal Grignou Cc: Yu-Hsuan Hsu Cc: Prashant Malani Cc: Brian Norris Reviewed-by: Brian Norris Signed-off-by: Guenter Roeck --- v3: No change v2: Added patch drivers/platform/chrome/cros_ec_lightbar.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c index b59180bff5a3..8445cda57927 100644 --- a/drivers/platform/chrome/cros_ec_lightbar.c +++ b/drivers/platform/chrome/cros_ec_lightbar.c @@ -117,7 +117,7 @@ static int get_lightbar_version(struct cros_ec_dev *ec, param = (struct ec_params_lightbar *)msg->data; param->cmd = LIGHTBAR_CMD_VERSION; ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); - if (ret < 0) { + if (ret < 0 && ret != -EINVAL) { ret = 0; goto exit; } @@ -298,11 +298,9 @@ static ssize_t sequence_show(struct device *dev, goto exit; ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); - if (ret == -EPROTO) { - ret = scnprintf(buf, PAGE_SIZE, - "ERROR: EC returned %d\n", msg->result); - goto exit; - } else if (ret < 0) { + if (ret < 0) { + ret = scnprintf(buf, PAGE_SIZE, "XFER / EC ERROR %d / %d\n", + ret, msg->result); goto exit; }