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h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=V7r6Wd2Zq7IqIuAc7RYAeEuBl0zwwqCHFPKfaWlTO2uEW2vOT9jyvDiBZ6TFEb+Rs gt5QZzWWrRQfSCGcp8YRrVaxwmhhPz2/hh9JPtZex3VA7AwvOIiIFJAExoV3x/fmCi wZjd8m9VkO2VLjx38KFB2oRaBPbsKpmmB4H8jw81L+TJhwC5INjvPOPRPvwMkDWg8z WhPSGy/WLLe6fY806qHsH93O/e3zKEmb/qv6m7e70WOD83C1vRaaqT5xvFnwycVA5w irwu6+6iVgQoWiKfxKrOl3r8wN+Yd5sIqISzT6grUcL4p5ihJKYbNHmxtnV1RVBJD1 QwiJeZD5JMy2w== Received: from [192.168.1.205] (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 3CDB937820EE; Fri, 1 Mar 2024 00:12:28 +0000 (UTC) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Thu, 29 Feb 2024 19:12:09 -0500 Subject: [PATCH v2 3/9] drm/bridge: lt8912b: Don't log an error when DSI host can't be found Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240229-anx7625-defer-log-no-dsi-host-v2-3-00506941049a@collabora.com> References: <20240229-anx7625-defer-log-no-dsi-host-v2-0-00506941049a@collabora.com> In-Reply-To: <20240229-anx7625-defer-log-no-dsi-host-v2-0-00506941049a@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 , =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.13.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792280641850826773 X-GMAIL-MSGID: 1792280641850826773 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. Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Suggested-by: AngeloGioacchino Del Regno Signed-off-by: Nícolas F. R. A. Prado --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 273157428c82..15aa890c3e6d 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -496,10 +496,8 @@ static int lt8912_attach_dsi(struct lt8912 *lt) }; host = of_find_mipi_dsi_host_by_node(lt->host_node); - if (!host) { - dev_err(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"); dsi = devm_mipi_dsi_device_register_full(dev, host, &info); if (IS_ERR(dsi)) {