of/fdt: fix aliases with baudrate in earlycon
Many boards use an alias in the stdout-path specification along
with console options after a colon (e.g. serial0:115200n8). When
using earlycon, this specification currently does not work. While
fdt_path_offset supports alias resolution, it does not remove the
console options by itself. Use the fdt_path_offset_namelen variant
and provide the length of the alias to enable aliases with console
options in the stdout-path.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 6e82bc42..9fc3568 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -813,8 +813,11 @@
if (!p || !l)
return -ENOENT;
+ /* Remove console options if present */
+ l = strchrnul(p, ':') - p;
+
/* Get the node specified by stdout-path */
- offset = fdt_path_offset(fdt, p);
+ offset = fdt_path_offset_namelen(fdt, p, l);
if (offset < 0)
return -ENODEV;