[U-Boot] [PATCH v4 07/33] dm: Provide better debugging when a device fails to bind

Simon Glass
2015-08-24T15:12:25Z

All devices should bind without error. But when they don't, they can cause
driver model init to fail. A real situation where this can happen is when
there is a missing uclass.

Add a debug() call to dm_scan_fdt_node to make this easier to track.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

drivers/core/root.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/core/root.c b/drivers/core/root.c
index 78ab00c..bdb394a 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -162,8 +162,11 @@ int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
continue;
}
err = lists_bind_fdt(parent, blob, offset, NULL);
- if (err && !ret)
+ if (err && !ret) {
ret = err;
+ debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
+ ret);
+ }
}

if (ret)
--
2.5.0.457.gab17608