When a DT overlay has a fixup node that is not present in the base DT
__symbols__, this error is printed:
OF: resolver: overlay phandle fixup failed: -22
create_overlay: Failed to create overlay (err=-22)
which does not help much in finding the node that caused the problem.
Add a debug print with the name of the fixup node that caused the
error. The new output is:
OF: resolver: node gpio9 not found in base DT, fixup failed
OF: resolver: overlay phandle fixup failed: -22
create_overlay: Failed to create overlay (err=-22)
Signed-off-by: Luca Ceresoli <luca@xxxxxxxxxxxxxxxx>
---
NOTE: this patch is not for mainline!
It applies on top of the runtime overlay patches at
git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git on
branch topic/overlays, currently based on v5.6-rc1. This looked like the
most up-to-date version of the overlay patches. Should there be a better
place, please let me know.
---
drivers/of/resolver.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 83c766233181..ade817407b78 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -321,8 +321,11 @@ int of_resolve_phandles(struct device_node *overlay)
err = of_property_read_string(tree_symbols,
prop->name, &refpath);
- if (err)
+ if (err) {
+ pr_err("node %s not found in base DT, fixup failed",
+ prop->name);
goto out;
+ }
refnode = of_find_node_by_path(refpath);
if (!refnode) {
--
2.25.0
