6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
[ Upstream commit 5ff5505b9a2d827cae3f95dceba258c963138175 ]
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: 623a3531e9cf ("drm/panel: Add driver for Novatek NT35950 DSI DriverIC panels")
Suggested-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>
Signed-off-by: Robert Foss <rfoss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240415-anx7625-defer-log-no-dsi-host-v3-8-619a28148e5c@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-novatek-nt35950.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35950.c b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
index 648ce92014265..028fdac293f77 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt35950.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
@@ -556,10 +556,8 @@ static int nt35950_probe(struct mipi_dsi_device *dsi)
}
dsi_r_host = of_find_mipi_dsi_host_by_node(dsi_r);
of_node_put(dsi_r);
- if (!dsi_r_host) {
- dev_err(dev, "Cannot get secondary DSI host\n");
- return -EPROBE_DEFER;
- }
+ if (!dsi_r_host)
+ return dev_err_probe(dev, -EPROBE_DEFER, "Cannot get secondary DSI host\n");
nt->dsi[1] = mipi_dsi_device_register_full(dsi_r_host, info);
if (!nt->dsi[1]) {
--
2.43.0
