From patchwork Mon Apr 15 21:49:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 13630768 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8CCBBC4345F for ; Mon, 15 Apr 2024 21:50:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A70FE10FB2E; Mon, 15 Apr 2024 21:50:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="P77vgAGx"; dkim-atps=neutral Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8B98E10FD4F for ; Mon, 15 Apr 2024 21:50:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1713217813; bh=N/M9yKO5a2ZphLLyAy/Z2CW/R1G8K3gXCs5SBps2WyI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=P77vgAGx9i3RwRH1kZNvzJR5vzEXHwUTkxSItIP82jN65NvFVHdzf7ZVrBakD7m2r AyjLLv4tQIay92qhI83Htsd38mddhskEpxq/L5cUgoBUf5qpPjWIsfXm/mBDdMMihZ uG2H/Xcqkojk2jITaysW1Febp4hsPNdn+OeFg9x7nzwgcivcW0q7wFsaAx0+1tOttU htCiJWrmOwTzH8dFKC2dtdfV28YleYL/q6vdcC0/gL+TVLP6ibELtsHHF2O944dY9v giV++EA75TVLf7ABImB21EUvzgsKAG2IqrPTfqbmXhN057u6JQPtprTx0WqvddftFg qJwmGLsAC9Ikw== Received: from [192.168.42.226] (zone.collabora.co.uk [167.235.23.81]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nfraprado) by madrid.collaboradmins.com (Postfix) with ESMTPSA id A1CA037811CD; Mon, 15 Apr 2024 21:50:09 +0000 (UTC) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Mon, 15 Apr 2024 17:49:35 -0400 Subject: [PATCH v3 7/9] drm/bridge: dpc3433: Don't log an error when DSI host can't be found MIME-Version: 1.0 Message-Id: <20240415-anx7625-defer-log-no-dsi-host-v3-7-619a28148e5c@collabora.com> References: <20240415-anx7625-defer-log-no-dsi-host-v3-0-619a28148e5c@collabora.com> In-Reply-To: <20240415-anx7625-defer-log-no-dsi-host-v3-0-619a28148e5c@collabora.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , owen , Jagan Teki , Marek Vasut , Adrien Grassein , Srinivas Kandagatla , Sam Ravnborg , Bjorn Andersson , Vinod Koul , Dmitry Baryshkov , Vinay Simha BN , Christopher Vollo , Jessica Zhang , Marijn Suijten , AngeloGioacchino Del Regno Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno , Laurent Pinchart , =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.13.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Given that failing to find a DSI host causes the driver to defer probe, make use of dev_err_probe() to log the reason. This makes the defer probe reason available and avoids alerting userspace about something that is not necessarily an error. Also move the "failed to attach" error message so that it's only printed when the devm_mipi_dsi_attach() call fails. Fixes: 6352cd451ddb ("drm: bridge: Add TI DLPC3433 DSI to DMD bridge") Suggested-by: AngeloGioacchino Del Regno Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Laurent Pinchart Signed-off-by: Nícolas F. R. A. Prado --- drivers/gpu/drm/bridge/ti-dlpc3433.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c index ca3348109bcd..6b559e071301 100644 --- a/drivers/gpu/drm/bridge/ti-dlpc3433.c +++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c @@ -319,12 +319,11 @@ static int dlpc_host_attach(struct dlpc *dlpc) .channel = 0, .node = NULL, }; + int ret; host = of_find_mipi_dsi_host_by_node(dlpc->host_node); - if (!host) { - DRM_DEV_ERROR(dev, "failed to find dsi host\n"); - return -EPROBE_DEFER; - } + if (!host) + return dev_err_probe(dev, -EPROBE_DEFER, "failed to find dsi host\n"); dlpc->dsi = mipi_dsi_device_register_full(host, &info); if (IS_ERR(dlpc->dsi)) { @@ -336,7 +335,11 @@ static int dlpc_host_attach(struct dlpc *dlpc) dlpc->dsi->format = MIPI_DSI_FMT_RGB565; dlpc->dsi->lanes = dlpc->dsi_lanes; - return devm_mipi_dsi_attach(dev, dlpc->dsi); + ret = devm_mipi_dsi_attach(dev, dlpc->dsi); + if (ret) + DRM_DEV_ERROR(dev, "failed to attach dsi host\n"); + + return ret; } static int dlpc3433_probe(struct i2c_client *client) @@ -367,10 +370,8 @@ static int dlpc3433_probe(struct i2c_client *client) drm_bridge_add(&dlpc->bridge); ret = dlpc_host_attach(dlpc); - if (ret) { - DRM_DEV_ERROR(dev, "failed to attach dsi host\n"); + if (ret) goto err_remove_bridge; - } return 0;