From patchwork Wed Mar 22 14:03:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 13184132 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 33B35C6FD1F for ; Wed, 22 Mar 2023 14:08:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 56B2610E94F; Wed, 22 Mar 2023 14:08:33 +0000 (UTC) X-Greylist: delayed 311 seconds by postgrey-1.36 at gabe; Wed, 22 Mar 2023 14:08:30 UTC Received: from mail11.truemail.it (mail11.truemail.it [IPv6:2001:4b7e:0:8::81]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5D58D10E94F for ; Wed, 22 Mar 2023 14:08:30 +0000 (UTC) Received: from francesco-nb.toradex.int (31-10-206-125.static.upc.ch [31.10.206.125]) by mail11.truemail.it (Postfix) with ESMTPA id B465C2095C; Wed, 22 Mar 2023 15:03:14 +0100 (CET) From: Francesco Dolcini To: Adrien Grassein , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org Subject: [PATCH v1] drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found Date: Wed, 22 Mar 2023 15:03:09 +0100 Message-Id: <20230322140309.95936-1-francesco@dolcini.it> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 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: , Cc: Francesco Dolcini , Matheus Castello , linux-kernel@vger.kernel.org, stable@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Matheus Castello Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent with what all the other DRM bridge drivers are doing and this is required since the bridge might not be there when the driver is probed and this should not be a fatal failure. Cc: Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Matheus Castello Signed-off-by: Francesco Dolcini --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 2019a8167d69..fec02e47cfdb 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -676,8 +676,8 @@ static int lt8912_parse_dt(struct lt8912 *lt) lt->hdmi_port = of_drm_find_bridge(port_node); if (!lt->hdmi_port) { - dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__); - ret = -ENODEV; + dev_dbg(lt->dev, "%s: Failed to get hdmi port\n", __func__); + ret = -EPROBE_DEFER; goto err_free_host_node; }