From patchwork Thu Sep 3 00:52:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1356274 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-tegra-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.a=rsa-sha256 header.s=20161025 header.b=IWUZeKXM; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Bhj5N6MD8z9sTq for ; Thu, 3 Sep 2020 10:55:04 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728072AbgICAzD (ORCPT ); Wed, 2 Sep 2020 20:55:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727867AbgICAyG (ORCPT ); Wed, 2 Sep 2020 20:54:06 -0400 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92506C061244; Wed, 2 Sep 2020 17:54:05 -0700 (PDT) Received: by mail-lj1-x242.google.com with SMTP id v23so1451983ljd.1; Wed, 02 Sep 2020 17:54:05 -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=zZ5romOj71w+BP60fF9NtT6rTMQR/LTg+gaRvAuiW7Q=; b=IWUZeKXMHeL7uFx2lG+K6kWnLIogXAV6WYRqYvuDXpyN9BY3r3x+vpVA1pWo7bVnxM ng8FU3p+6CGOj4SGTj0d0dis2tZ1/BpJF7N0b0ZKWxM+Soihf3wBiEOjXYczIk3mXUeu qfCtZjCIAqsfQ6de2Ogls/skxEZSI4t1L9zAOYIT6qalHJMCaUEyVTfj92C652xfUgYS YUi6NqQCLOyJRxug6t4Qv2Et6YCXZX7IsIahcYtWYYesc3OLsZ9PbyvCC3dv7zTNR0cg 7ZeIE0JmAMGtJzWo0GjT2AiYSzA26uSYdfawPTZETmIpGZkqHnpA0bm5TVH6TjX5Ttc3 z8iQ== 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=zZ5romOj71w+BP60fF9NtT6rTMQR/LTg+gaRvAuiW7Q=; b=WdtU5P9LQCzr/oZ1YWwfbaHEhR3LJFlo7f358eJVSBGO9f9NudKbfnsIX1w7IrSjtM +QyEFunp9Ax97/J830KycysRuThsy+Jr/CACy3ytTvtY4xhzNAc5RV2sIMsfYyOkXj0u bURmqis0nFKm94aSIw7cKdNh0Qx1xkl4s5otQNzTaW9x6vmRg3MW8auI8bZpDDXW2AXQ A3a68aOYCt4yImsKAEgFvPmlXt46g5HnQzEIqndmZJu0fFBArxCCOjVe/gE+gaebtguG TGLZdC5VoVL4otPhlThspzX9+42RA+RqD6KpDPdKYf9XYcpN2FyESQjEA+cr+cADquBs lWew== X-Gm-Message-State: AOAM533pMl9vtHfrjOjOUoIsejZDqncYPV7dtYsMkoU4kqNXPK9b4zsa nhlEtPmCHQaFY9o07xX+dDg= X-Google-Smtp-Source: ABdhPJxFFum1VxT9tAN9kFrCa3Gay5WC0Fn6Y9IofUcPj2i+lECyJtorHMHRYe0KZTH3aeRTtzMc3Q== X-Received: by 2002:a2e:6815:: with SMTP id c21mr254180lja.132.1599094443628; Wed, 02 Sep 2020 17:54:03 -0700 (PDT) Received: from localhost.localdomain (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.gmail.com with ESMTPSA id g1sm250321ljj.56.2020.09.02.17.54.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Sep 2020 17:54:03 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Laxman Dewangan , Wolfram Sang , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , Andy Shevchenko Cc: linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 13/22] i2c: tegra: Check errors for both positive and negative values Date: Thu, 3 Sep 2020 03:52:51 +0300 Message-Id: <20200903005300.7894-14-digetx@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200903005300.7894-1-digetx@gmail.com> References: <20200903005300.7894-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org The driver's code is inconsistent in regards to the error values checking. The correct way should be to check both positive and negative values. This patch cleans up the error-checks in the code. Note that the pm_runtime_get_sync() could return positive value on success, hence only relevant parts of the code are changed by this patch. Signed-off-by: Dmitry Osipenko --- drivers/i2c/busses/i2c-tegra.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 19cea39bd4c4..0f2b6eb5fa27 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -684,19 +684,19 @@ static int __maybe_unused tegra_i2c_runtime_resume(struct device *dev) return ret; ret = clk_enable(i2c_dev->fast_clk); - if (ret < 0) { + if (ret) { dev_err(dev, "failed to enable fast clock: %d\n", ret); return ret; } ret = clk_enable(i2c_dev->slow_clk); - if (ret < 0) { + if (ret) { dev_err(dev, "failed to enable slow clock: %d\n", ret); goto disable_fast_clk; } ret = clk_enable(i2c_dev->div_clk); - if (ret < 0) { + if (ret) { dev_err(dev, "failed to enable div clock: %d\n", ret); goto disable_slow_clk; } @@ -1057,7 +1057,7 @@ static void tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev, slv_config.device_fc = true; ret = dmaengine_slave_config(chan, &slv_config); - if (ret < 0) { + if (ret) { dev_err(i2c_dev->dev, "DMA config failed: %d\n", ret); dev_err(i2c_dev->dev, "falling back to PIO\n"); tegra_i2c_release_dma(i2c_dev); @@ -1245,7 +1245,7 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, xfer_size, DMA_FROM_DEVICE); err = tegra_i2c_dma_submit(i2c_dev, xfer_size); - if (err < 0) { + if (err) { dev_err(i2c_dev->dev, "starting RX DMA failed: %d\n", err); return err; @@ -1304,7 +1304,7 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, xfer_size, DMA_TO_DEVICE); err = tegra_i2c_dma_submit(i2c_dev, xfer_size); - if (err < 0) { + if (err) { dev_err(i2c_dev->dev, "starting TX DMA failed: %d\n", err); return err;