5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
[ Upstream commit cd0a2c6a081ff67007323725b9ff07d9934b1ed8 ]
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: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Robert Foss <rfoss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240415-anx7625-defer-log-no-dsi-host-v3-4-619a28148e5c@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 660e05fa4a704..7f58ceda5b08a 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -766,10 +766,8 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
int ret;
host = of_find_mipi_dsi_host_by_node(dsi_node);
- if (!host) {
- dev_err(lt9611->dev, "failed to find dsi host\n");
- return ERR_PTR(-EPROBE_DEFER);
- }
+ if (!host)
+ return ERR_PTR(dev_err_probe(lt9611->dev, -EPROBE_DEFER, "failed to find dsi host\n"));
dsi = mipi_dsi_device_register_full(host, &info);
if (IS_ERR(dsi)) {
--
2.43.0
