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Date: Sat, 16 Jan 2016 13:37:23 -0800 From: Peter Hurley <peter@...leysoftware.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Rob Herring <robh@...nel.org>, Grant Likely <grant.likely@...aro.org> Cc: Jiri Slaby <jslaby@...e.cz>, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, Kevin Cernekee <cernekee@...il.com>, Jon Hunter <jonathanh@...dia.com>, Paul Burton <paul.burton@...tec.com>, Masahiro Yamada <yamada.masahiro@...ionext.com>, Sebastian Frias <sf84@...oste.net>, Peter Hurley <peter@...leysoftware.com> Subject: [PATCH v5 10/11] 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@...nel.org> Signed-off-by: Peter Hurley <peter@...leysoftware.com> --- 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
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