From patchwork Fri Jul 21 13:50:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Schneider-Pargmann X-Patchwork-Id: 13322027 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 788031EA77 for ; Fri, 21 Jul 2023 13:50:28 +0000 (UTC) Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C750130EA for ; Fri, 21 Jul 2023 06:50:21 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-3fc04692e20so17336575e9.0 for ; Fri, 21 Jul 2023 06:50:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20221208.gappssmtp.com; s=20221208; t=1689947419; x=1690552219; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=dRBYGxiJV+fUO8L5x5OkCA3grJdrnxlxanjlGq4MKP4=; b=X/b4lfScvLyO50oKagC+JEFYqdE8/h/2h/kB633hueE2yocwWU1uR7k887yaktJC0P N/diOKoYfnh1vTgtHytcXoF9fRLm1Ug8stz8oznWSd/Ho8d0E97HtQzZIAGe44lP1h8m TYktfCtqjSidnkGcASViXJnDGwKUFJIyP1fGyt7xHIKkGMoFjY8Yw2OrS8XDQwMDFPUJ YSHCN0hUU9JZ11XvrY0GhQe2wp1RiPlg4ONWI50U1hxbGTPEyqtFE+AwHQxn+5zV+K1Z QozEK7YynhD8V0RLAkXxBueGLC9fAp+Zsv2dwO0dd/cHoMJZLI9z/QUq/v2ulF79xeXY gMpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689947419; x=1690552219; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dRBYGxiJV+fUO8L5x5OkCA3grJdrnxlxanjlGq4MKP4=; b=KZx+ab+UiCfGuFntP/8n96BY0TdlwNKTi1gOiAn15vg6cbOnCvLLq156ZKfgMp1lts LmDjqM3ebDpCis31jZASjnk1Rk6iIq4i6qnO0VZ976P9se88UtIQEw1cCswSVmB3OlSk Kgrmch4qmVTkQMprJ4oCipKOR583l1dF7E34k/jTwWS60vMECWB2HxKl4pUFYYoh8boJ ZbYLjmUACRx5CBz+62wUSw69qAzXHc0w+wm/mc2d92jPxDdYvdNXPNQm3h453awNDVM0 FnKrsLrHnVvOo3kiL4cTBRvwrnClkfIwRlNPKXUCBXWQnrsHRCuHnxw1lHlVUY46D8zG ncWg== X-Gm-Message-State: ABy/qLZvff1ziOAGf1Inm1Z+3uRk8NL0w3+D9OIVHPhMAyeAm/ejwXi7 edqFwfoFAt4zrIH65K29TKWaZA== X-Google-Smtp-Source: APBJJlFgG2WeFkm/yf/wlFlPZiCNsdoffBh//BtztWnERSfUFPNj2OMuWQPhdMMl7iGF3Y9DuEJvtA== X-Received: by 2002:a05:600c:20c4:b0:3f4:d18f:b2fb with SMTP id y4-20020a05600c20c400b003f4d18fb2fbmr1623924wmm.8.1689947419766; Fri, 21 Jul 2023 06:50:19 -0700 (PDT) Received: from blmsp.fritz.box ([2001:4091:a247:82fa:b762:4f68:e1ed:5041]) by smtp.gmail.com with ESMTPSA id c14-20020adfed8e000000b00313e4d02be8sm4233980wro.55.2023.07.21.06.50.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Jul 2023 06:50:19 -0700 (PDT) From: Markus Schneider-Pargmann To: Wolfgang Grandegger , Marc Kleine-Budde , Rob Herring , Krzysztof Kozlowski Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Conor Dooley , Chandrasekar Ramakrishnan , Michal Kubiak , Vivek Yadav , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Simon Horman , Markus Schneider-Pargmann Subject: [PATCH v3 6/6] can: tcan4x5x: Add error messages in probe Date: Fri, 21 Jul 2023 15:50:09 +0200 Message-Id: <20230721135009.1120562-7-msp@baylibre.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230721135009.1120562-1-msp@baylibre.com> References: <20230721135009.1120562-1-msp@baylibre.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org To be able to understand issues during probe easier, add error messages if something fails. Signed-off-by: Markus Schneider-Pargmann --- drivers/net/can/m_can/tcan4x5x-core.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c index 2d329b4e4f52..60380b50e553 100644 --- a/drivers/net/can/m_can/tcan4x5x-core.c +++ b/drivers/net/can/m_can/tcan4x5x-core.c @@ -402,6 +402,8 @@ static int tcan4x5x_can_probe(struct spi_device *spi) /* Sanity check */ if (freq < 20000000 || freq > TCAN4X5X_EXT_CLK_DEF) { + dev_err(&spi->dev, "Clock frequency is out of supported range %d\n", + freq); ret = -ERANGE; goto out_m_can_class_free_dev; } @@ -420,16 +422,22 @@ static int tcan4x5x_can_probe(struct spi_device *spi) /* Configure the SPI bus */ spi->bits_per_word = 8; ret = spi_setup(spi); - if (ret) + if (ret) { + dev_err(&spi->dev, "SPI setup failed %d\n", ret); goto out_m_can_class_free_dev; + } ret = tcan4x5x_regmap_init(priv); - if (ret) + if (ret) { + dev_err(&spi->dev, "regmap init failed %d\n", ret); goto out_m_can_class_free_dev; + } ret = tcan4x5x_power_enable(priv->power, 1); - if (ret) + if (ret) { + dev_err(&spi->dev, "Enabling regulator failed %d\n", ret); goto out_m_can_class_free_dev; + } version_info = tcan4x5x_find_version(priv); if (IS_ERR(version_info)) { @@ -438,16 +446,22 @@ static int tcan4x5x_can_probe(struct spi_device *spi) } ret = tcan4x5x_get_gpios(mcan_class, version_info); - if (ret) + if (ret) { + dev_err(&spi->dev, "Getting gpios failed %d\n", ret); goto out_power; + } ret = tcan4x5x_init(mcan_class); - if (ret) + if (ret) { + dev_err(&spi->dev, "tcan initialization failed %d\n", ret); goto out_power; + } ret = m_can_class_register(mcan_class); - if (ret) + if (ret) { + dev_err(&spi->dev, "Failed registering m_can device %d\n", ret); goto out_power; + } netdev_info(mcan_class->net, "TCAN4X5X successfully initialized.\n"); return 0;