From nobody Tue Oct 7 14:06:27 2025 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 4435224501B for ; Wed, 9 Jul 2025 21:01:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752094899; cv=none; b=FILRDNGvSagEQ7+hFTEIdHSQH860WUcscuAN57cqxLW9TXsHWdFYBNiaQP6q5e45y0J6tPCOfU/XzkFJvOeHpuJNmjD1cvLAsCxgecm2kCeiL03iiW3IbXihsJnemMIAdBWUYRZBBPTTGq/wAA7/uajlunAGMvfpoa7p1ltSMAc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752094899; c=relaxed/simple; bh=WdXIZNuTvyx1CD2BBHBXvl+8DQ7UTjvdIVCL2zLA3i8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=LmsAW++7RrinI1jcC7HoyyI33CfjnbYlFnlTo9rvzmcAby6B9sWCiUc9XRlg5Kpxhr9jIhBR4JNWl4MWght8ZoeEocgY4dJhE5i94NHqF1rxidv8aybzme6p+UHBgSGBOIkRw4zuPC+qQW7DrZ6V+g2M915DV11JFsF65F8vRX8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=Rz4faA4T; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="Rz4faA4T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1752094895; bh=WdXIZNuTvyx1CD2BBHBXvl+8DQ7UTjvdIVCL2zLA3i8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Rz4faA4TVP2f7mHCpwUiBHFd9/1gTQTfZophWgVvr6WTKML+gq+3oJC19LFr9S1ah QvOjPj+6bX3gWq8KuzHSJ6zp07Z/sIV4WIJbX/n5cV0Aw+VmrOf+mQCJwFyKMMLD6z s7l3y5J1Yx7B24m6fgguLoHzry4DdpgqoTFBWjRrwXXTH9pngcjqhk0DftKrHwXEx9 1bhPH4TKxGPXR7C/+KL8fQ5LhyMKy94mK0YLZcM5XuhQSzUs+bS6IycPppi2q9XiZQ wvcGVF7z6slHp4aDKpnYnTNMWkXFYUQu90DgQerSjoplF5W7fLB+zjjRCOWoO73rEt 761gy+Xg7uHFg== Received: from localhost (unknown [212.93.144.165]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with UTF8SMTPSA id 8C45C17E0456; Wed, 9 Jul 2025 23:01:35 +0200 (CEST) From: Cristian Ciocaltea Date: Thu, 10 Jul 2025 00:01:14 +0300 Subject: [PATCH v2 3/6] drm/rockchip: dw_hdmi_qp: Improve error handling with dev_err_probe() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250710-rk3588-hdmi-cec-v2-3-f5884be34bc1@collabora.com> References: <20250710-rk3588-hdmi-cec-v2-0-f5884be34bc1@collabora.com> In-Reply-To: <20250710-rk3588-hdmi-cec-v2-0-f5884be34bc1@collabora.com> To: Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Dmitry Baryshkov , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Catalin Marinas , Will Deacon Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 The error handling in dw_hdmi_qp_rockchip_bind() is quite inconsistent, i.e. in some cases the error code is not included in the message, while in some other cases there is no check for -EPROBE_DEFER. Since this is part of the probe path, address the aforementioned issues by switching to dev_err_probe(), which also reduces the code a bit. Signed-off-by: Cristian Ciocaltea --- drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 62 ++++++++++------------= ---- 1 file changed, 24 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c b/drivers/gpu/d= rm/rockchip/dw_hdmi_qp-rockchip.c index 7d531b6f4c098c6c548788dad487ce4613a2f32b..4e7794aa2dded4c124963eaa7f5= 158bde9bbbdb6 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c @@ -457,10 +457,8 @@ static int dw_hdmi_qp_rockchip_bind(struct device *dev= , struct device *master, return -ENODEV; =20 if (!cfg->ctrl_ops || !cfg->ctrl_ops->io_init || - !cfg->ctrl_ops->irq_callback || !cfg->ctrl_ops->hardirq_callback) { - dev_err(dev, "Missing platform ctrl ops\n"); - return -ENODEV; - } + !cfg->ctrl_ops->irq_callback || !cfg->ctrl_ops->hardirq_callback) + return dev_err_probe(dev, -ENODEV, "Missing platform ctrl ops\n"); =20 hdmi->ctrl_ops =3D cfg->ctrl_ops; hdmi->dev =3D &pdev->dev; @@ -473,10 +471,9 @@ static int dw_hdmi_qp_rockchip_bind(struct device *dev= , struct device *master, break; } } - if (hdmi->port_id < 0) { - dev_err(hdmi->dev, "Failed to match HDMI port ID\n"); - return hdmi->port_id; - } + if (hdmi->port_id < 0) + return dev_err_probe(hdmi->dev, hdmi->port_id, + "Failed to match HDMI port ID\n"); =20 plat_data.phy_ops =3D cfg->phy_ops; plat_data.phy_data =3D hdmi; @@ -497,39 +494,30 @@ static int dw_hdmi_qp_rockchip_bind(struct device *de= v, struct device *master, =20 hdmi->regmap =3D syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); - if (IS_ERR(hdmi->regmap)) { - dev_err(hdmi->dev, "Unable to get rockchip,grf\n"); - return PTR_ERR(hdmi->regmap); - } + if (IS_ERR(hdmi->regmap)) + return dev_err_probe(hdmi->dev, PTR_ERR(hdmi->regmap), + "Unable to get rockchip,grf\n"); =20 hdmi->vo_regmap =3D syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,vo-grf"); - if (IS_ERR(hdmi->vo_regmap)) { - dev_err(hdmi->dev, "Unable to get rockchip,vo-grf\n"); - return PTR_ERR(hdmi->vo_regmap); - } + if (IS_ERR(hdmi->vo_regmap)) + return dev_err_probe(hdmi->dev, PTR_ERR(hdmi->vo_regmap), + "Unable to get rockchip,vo-grf\n"); =20 ret =3D devm_clk_bulk_get_all_enabled(hdmi->dev, &clks); - if (ret < 0) { - dev_err(hdmi->dev, "Failed to get clocks: %d\n", ret); - return ret; - } + if (ret < 0) + return dev_err_probe(hdmi->dev, ret, "Failed to get clocks\n"); =20 hdmi->enable_gpio =3D devm_gpiod_get_optional(hdmi->dev, "enable", GPIOD_OUT_HIGH); - if (IS_ERR(hdmi->enable_gpio)) { - ret =3D PTR_ERR(hdmi->enable_gpio); - dev_err(hdmi->dev, "Failed to request enable GPIO: %d\n", ret); - return ret; - } + if (IS_ERR(hdmi->enable_gpio)) + return dev_err_probe(hdmi->dev, PTR_ERR(hdmi->enable_gpio), + "Failed to request enable GPIO\n"); =20 hdmi->phy =3D devm_of_phy_get_by_index(dev, dev->of_node, 0); - if (IS_ERR(hdmi->phy)) { - ret =3D PTR_ERR(hdmi->phy); - if (ret !=3D -EPROBE_DEFER) - dev_err(hdmi->dev, "failed to get phy: %d\n", ret); - return ret; - } + if (IS_ERR(hdmi->phy)) + return dev_err_probe(hdmi->dev, PTR_ERR(hdmi->phy), + "Failed to get phy\n"); =20 cfg->ctrl_ops->io_init(hdmi); =20 @@ -558,17 +546,15 @@ static int dw_hdmi_qp_rockchip_bind(struct device *de= v, struct device *master, =20 hdmi->hdmi =3D dw_hdmi_qp_bind(pdev, encoder, &plat_data); if (IS_ERR(hdmi->hdmi)) { - ret =3D PTR_ERR(hdmi->hdmi); drm_encoder_cleanup(encoder); - return ret; + return dev_err_probe(hdmi->dev, PTR_ERR(hdmi->hdmi), + "Failed to bind dw-hdmi-qp"); } =20 connector =3D drm_bridge_connector_init(drm, encoder); - if (IS_ERR(connector)) { - ret =3D PTR_ERR(connector); - dev_err(hdmi->dev, "failed to init bridge connector: %d\n", ret); - return ret; - } + if (IS_ERR(connector)) + return dev_err_probe(hdmi->dev, PTR_ERR(connector), + "Failed to init bridge connector\n"); =20 return drm_connector_attach_encoder(connector, encoder); } --=20 2.50.0