From: Randy Dunlap rdunlap@infradead.org
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@infradead.org Reported-by: Igor Zhbanov izh1979@gmail.com Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru Cc: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Cc: Yoshinori Sato ysato@users.sourceforge.jp Cc: Rich Felker dalias@libc.org Cc: linux-sh@vger.kernel.org Cc: stable@vger.kernel.org Reviewed-by: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Link: https://lore.kernel.org/r/20230306040037.20350-3-rdunlap@infradead.org Signed-off-by: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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);