[PATCH 6.1 229/473] drm/bridge: tc358775: Dont log an error when DSI host cant be found

Greg Kroah-Hartman
2024-06-06T14:15:48Z

From: Nícolas F. R. A. Prado <nfraprado@collabora.com>

[ Upstream commit 272377aa0e3dddeec3f568c8bb9d12c7a79d8ef5 ]

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: b26975593b17 ("display/drm/bridge: TC358775 DSI/LVDS driver")
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240415-anx7625-defer-log-no-dsi-host-v3-6-619a28148e5c@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/bridge/tc358775.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 02dc12b8151e7..b1c8ce5d20186 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -611,10 +611,8 @@ static int tc_attach_host(struct tc_data *tc)
};

host = of_find_mipi_dsi_host_by_node(tc->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)) {
--
2.43.0