[PATCH v6 11/12] of: earlycon: Log more helpful message if stdout-path node not found
From: Peter Hurley <hidden>
Date: 2016-01-16 23:24:47
Also in:
lkml
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
Earlycon may fail to initialize for a variety of reasons, most of which log the default early param message. If the stdout-path node is not found, log the path which was not found (and suppress the default early param message). Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Peter Hurley <redacted> --- drivers/of/fdt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 918809e..e2295b2 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c@@ -820,11 +820,14 @@ static int __init early_init_dt_scan_chosen_serial(void) q = strchrnul(p, ':'); if (*q != '\0') options = q + 1; + l = q - p; /* Get the node specified by stdout-path */ - offset = fdt_path_offset_namelen(fdt, p, q - p); - if (offset < 0) - return -ENODEV; + offset = fdt_path_offset_namelen(fdt, p, l); + if (offset < 0) { + pr_warn("earlycon: stdout-path %.*s not found\n", l, p); + return 0; + } for (match = __earlycon_table; match < __earlycon_table_end; match++) { if (!match->compatible[0])
--
2.7.0