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From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org, Maxime Ripard <maxime@cerno.tech>,
	Douglas Anderson <dianders@chromium.org>,
	Stephen Boyd <swboyd@chromium.org>,
	Rob Clark <robdclark@chromium.org>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Robert Foss <robert.foss@linaro.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Sam Ravnborg <sam@ravnborg.org>,
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] drm/bridge: sn65dsi86: defer if there is no dsi host
Date: Tue,  7 Dec 2021 12:09:06 -0800	[thread overview]
Message-ID: <20211207200906.609673-1-robdclark@gmail.com> (raw)

From: Rob Clark <robdclark@chromium.org>

Otherwise we don't get another shot at it if the bridge probes before
the dsi host is registered.  It seems like this is what *most* (but not
all) of the other bridges do.

It looks like this was missed in the conversion to attach dsi host at
probe time.

Fixes: c3b75d4734cb ("drm/bridge: sn65dsi86: Register and attach our DSI device at probe")
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 02b490671f8f..3684e12fbac3 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -716,7 +716,7 @@ static int ti_sn_attach_host(struct ti_sn65dsi86 *pdata)
 	host = of_find_mipi_dsi_host_by_node(pdata->host_node);
 	if (!host) {
 		DRM_ERROR("failed to find dsi host\n");
-		return -ENODEV;
+		return -EPROBE_DEFER;
 	}
 
 	dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
-- 
2.33.1


             reply	other threads:[~2021-12-07 20:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-07 20:09 Rob Clark [this message]
2021-12-07 20:26 ` [PATCH] drm/bridge: sn65dsi86: defer if there is no dsi host Doug Anderson
2021-12-07 20:35   ` Jernej Škrabec

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