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>,
"Jernej Škrabec" <jernej.skrabec@gmail.com>,
"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>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Sam Ravnborg" <sam@ravnborg.org>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2] drm/bridge: sn65dsi86: defer if there is no dsi host
Date: Tue, 7 Dec 2021 13:38:29 -0800 [thread overview]
Message-ID: <20211207213830.625890-1-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>
---
v2: Drop DRM_ERROR() in favor of drm_err_probe() and shift around the
spot where we report the error
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 02b490671f8f..8f1321ca819e 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -714,10 +714,8 @@ 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;
- }
+ if (!host)
+ return -EPROBE_DEFER;
dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
if (IS_ERR(dsi)) {
@@ -1267,8 +1265,10 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
drm_bridge_add(&pdata->bridge);
ret = ti_sn_attach_host(pdata);
- if (ret)
+ if (ret) {
+ dev_err_probe(pdata->dev, ret, "failed to attach dsi host");
goto err_remove_bridge;
+ }
return 0;
--
2.33.1
next reply other threads:[~2021-12-07 21:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 21:38 Rob Clark [this message]
2021-12-07 21:42 ` [PATCH v2] drm/bridge: sn65dsi86: defer if there is no dsi host Doug Anderson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211207213830.625890-1-robdclark@gmail.com \
--to=robdclark@gmail.com \
--cc=Laurent.pinchart@ideasonboard.com \
--cc=a.hajda@samsung.com \
--cc=airlied@linux.ie \
--cc=daniel@ffwll.ch \
--cc=dianders@chromium.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=jernej.skrabec@gmail.com \
--cc=jonas@kwiboo.se \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maxime@cerno.tech \
--cc=narmstrong@baylibre.com \
--cc=robdclark@chromium.org \
--cc=robert.foss@linaro.org \
--cc=sam@ravnborg.org \
--cc=swboyd@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).