| Message ID | 20240211052802.22612-1-rdunlap@infradead.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v5] sparc64: NMI watchdog: fix return value of __setup handler | expand |
On 2024-02-11 06:28, Randy Dunlap wrote: > __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 setup_nmi_watchdog(). > > Fixes: e5553a6d0442 ("sparc64: Implement NMI watchdog on capable cpus.") > 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: "David S. Miller" <davem@davemloft.net> > Cc: sparclinux@vger.kernel.org > Cc: Sam Ravnborg <sam@ravnborg.org> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: stable@vger.kernel.org > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: Andreas Larsson <andreas@gaisler.com> Applied to my for-next branch. Thanks, Andreas
diff -- a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -279,7 +279,7 @@ static int __init setup_nmi_watchdog(cha if (!strncmp(str, "panic", 5)) panic_on_timeout = 1; - return 0; + return 1; } __setup("nmi_watchdog=", setup_nmi_watchdog);
__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 setup_nmi_watchdog(). Fixes: e5553a6d0442 ("sparc64: Implement NMI watchdog on capable cpus.") 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: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: Andreas Larsson <andreas@gaisler.com> --- v2: change From: Igor to Reported-by: add more Cc's v3: use Igor's current email address v4: add Arnd to Cc: list v5: add Andreas to Cc: list arch/sparc/kernel/nmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)