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authorPeter Hurley <peter@hurleysoftware.com>2016-01-17 02:23:48 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-07 09:07:37 +0300
commit0fcc286f6a952d6ec40f74f26fd9cd5d63c25f9e (patch)
tree85ee9f89596da2bd8682aa0b96d2f3c8cc1ffe26 /drivers/of
parentdc6b576b283e7bdff552af9c0ce66e121c6b4887 (diff)
downloadlinux-0fcc286f6a952d6ec40f74f26fd9cd5d63c25f9e.tar.xz
of: earlycon: Log more helpful message if stdout-path node not found
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 <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/fdt.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 918809e6f913..e2295b2c9836 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])