From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
commit d1155e4132de712a9d3066e2667ceaad39a539c5 upstream.
__setup() handlers should return 1 to obsolete_checksetup() in
init/main.c to indicate that the boot option has been handled.
A return of 0 causes the boot option/value to be listed as an Unknown
kernel parameter and added to init's (limited) argument or environment
strings. Also, error return codes don't mean anything to
obsolete_checksetup() -- only non-zero (usually 1) or zero.
So return 1 from nmi_debug_setup().
Fixes: 1e1030dccb10 ("sh: nmi_debug support.")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: Igor Zhbanov <izh1979@xxxxxxxxx>
Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@xxxxxxxxxxxx
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: linux-sh@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230306040037.20350-3-rdunlap@xxxxxxxxxxxxx
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sh/kernel/nmi_debug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/sh/kernel/nmi_debug.c
+++ b/arch/sh/kernel/nmi_debug.c
@@ -52,7 +52,7 @@ static int __init nmi_debug_setup(char *
register_die_notifier(&nmi_debug_nb);
if (*str != '=')
- return 0;
+ return 1;
for (p = str + 1; *p; p = sep + 1) {
sep = strchr(p, ',');
@@ -73,6 +73,6 @@ static int __init nmi_debug_setup(char *
break;
}
- return 0;
+ return 1;
}
__setup("nmi_debug", nmi_debug_setup);
