From patchwork Wed Apr 24 12:34:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 1090117 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-i2c-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Sivt99Ft"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44q0Bq6YbQz9s71 for ; Wed, 24 Apr 2019 22:34:59 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729997AbfDXMex (ORCPT ); Wed, 24 Apr 2019 08:34:53 -0400 Received: from mail-lj1-f193.google.com ([209.85.208.193]:43832 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729980AbfDXMeb (ORCPT ); Wed, 24 Apr 2019 08:34:31 -0400 Received: by mail-lj1-f193.google.com with SMTP id k2so2454549lje.10; Wed, 24 Apr 2019 05:34:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+6jZN0Vl+RAhZC6JCcbsfReiinM9CSI7nwA9921XKbc=; b=Sivt99FtZ99ucSadBRT7+jKo6PgRiDrIdIKM0xeRsSIYW/nyie0pdUBsvctRCNeRKD BdIsG3m6AZ14SyyPu+wcDSQv5eslrWcYVnmjM8GLQqCZnfXFyABunMOx46ZZEMBRNn5T +v6u3uW3so/LFGe9u/K9rGKklt1etx+znyhLwrBVvudo1TN5g2SoEvbWF+OZybrIdihc AOwgOZKwpcPOHCv4wfL/+2q5ewDl1xUArMvhR3ttB/1IbBxn7dd7RhXLdEch9B63BlEt sdVjrqvilxql6CyamolZaOdLJYREmqcKylkAqUpCPPK5Ewk1/9XH1Ah+ciBHl9tEBj2L 1k2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+6jZN0Vl+RAhZC6JCcbsfReiinM9CSI7nwA9921XKbc=; b=hAagbGuaBcMoxZW6N/JsSpNbJWu6wcX8xVMgvKMn5NIb+WRokdaz0xSfZ2P3vUNiM3 rBFtLUP4XGIDSLGFieT1JpWFx2TAX/3kwP0tjhlVh7Kq/zvm6pl5UN6jxUZqOUFUNend zivZZn1RpBtzNlGSrnPrptQI/aIfHlGydloR0CWkZH3a1mZAUyqX0hs63tZ2JyfWWavE 2NkCoVi3I/V/NNZYcHgbpn3NAI8a91Uf6RF4Q5TL6MJ5xbFlMtyRbP0JUahnljmNcSBv J+h9D7nXvhyMwx3J7z9wRQ3nibT6mSmS60B5+TkRwhVne8ZQgmGE/TWoHTSRSA0xzY8j Vjjw== X-Gm-Message-State: APjAAAV0Ryv1wbQWRsPNAY5EW3viIVLHcTqCh26tiG6FURk+84j8PhS0 iLdzjiMte+yrgeel7iB68D0= X-Google-Smtp-Source: APXvYqxVoKFpn7RTcP5ZMITNPRVJKuo+skfqYWzaaAff9L8EQ6XAYTdO9V4ba83QxyiXOrbdHBWkDg== X-Received: by 2002:a2e:8347:: with SMTP id l7mr17260574ljh.17.1556109269170; Wed, 24 Apr 2019 05:34:29 -0700 (PDT) Received: from localhost.localdomain ([5.164.240.123]) by smtp.gmail.com with ESMTPSA id t14sm3765962lji.33.2019.04.24.05.34.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Apr 2019 05:34:28 -0700 (PDT) From: Serge Semin To: Peter Korsgaard , Peter Rosin Cc: Serge Semin , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/5] i2c-mux-gpio: Return an error if no config data found Date: Wed, 24 Apr 2019 15:34:11 +0300 Message-Id: <20190424123414.25311-3-fancer.lancer@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190424123414.25311-1-fancer.lancer@gmail.com> References: <20190424123414.25311-1-fancer.lancer@gmail.com> MIME-Version: 1.0 Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org It's pointless and might be even errors prone to proceed with further initialization if neither of- no platform-based settings were discovered. Just return an error in this case. Signed-off-by: Serge Semin --- drivers/i2c/muxes/i2c-mux-gpio.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 24cf6ec02e75..a14fe132b0c3 100644 --- a/drivers/i2c/muxes/i2c-mux-gpio.c +++ b/drivers/i2c/muxes/i2c-mux-gpio.c @@ -132,7 +132,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux, static int i2c_mux_gpio_probe_dt(struct gpiomux *mux, struct platform_device *pdev) { - return 0; + return -EINVAL; } #endif @@ -142,6 +142,9 @@ static int i2c_mux_gpio_probe_plat(struct gpiomux *mux, struct i2c_mux_gpio_platform_data *data = dev_get_platdata(&pdev->dev); struct gpio_chip *gpio; + if (!data) + return -EINVAL; + /* * If a GPIO chip name is provided, the GPIO pin numbers provided are * relative to its base GPIO number. Otherwise they are absolute. @@ -175,11 +178,10 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev) if (!mux) return -ENOMEM; - if (!dev_get_platdata(&pdev->dev)) + ret = i2c_mux_gpio_probe_plat(mux, pdev); + if (ret) ret = i2c_mux_gpio_probe_dt(mux, pdev); - else - ret = i2c_mux_gpio_probe_plat(mux, pdev); - if (ret < 0) + if (ret) return ret; parent = i2c_get_adapter(mux->data.parent);