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powerpc/4xx/cpm: Fix return value of __setup() handler

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[ Upstream commit 5bb99fd409 ]

__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 cpm_powersave_off().

Fixes: d164f6d4f9 ("powerpc/4xx: Add suspend and idle support")
Reported-by: Igor Zhbanov <izh1979@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220502192941.20955-1-rdunlap@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Randy Dunlap 2022-05-02 12:29:41 -07:00 committed by Greg Kroah-Hartman
parent c8a9b3defa
commit 4237eb9bdf
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/platforms/4xx/cpm.c
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@ -327,6 +327,6 @@ late_initcall(cpm_init);
static int __init cpm_powersave_off(char *arg) static int __init cpm_powersave_off(char *arg)
{ {
cpm.powersave_off = 1; cpm.powersave_off = 1;
return 0; return 1;
} }
__setup("powersave=off", cpm_powersave_off); __setup("powersave=off", cpm_powersave_off);