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Message-Id: <20220312063609.19362-1-rdunlap@infradead.org>
Date:   Fri, 11 Mar 2022 22:36:09 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     patches@...ts.linux.dev, Randy Dunlap <rdunlap@...radead.org>,
        Ben Dooks <ben-linux@...ff.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, patches@...linux.org.uk
Subject: [PATCH] ARM: JIVE: fix return value of __setup handler

__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 jive_mtdset().

Fixes: 9db829f485c5 ("[ARM] JIVE: Initial machine support for Logitech Jive")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Ben Dooks <ben-linux@...ff.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Alim Akhtar <alim.akhtar@...sung.com>
Cc: Russell King <linux@...linux.org.uk>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-samsung-soc@...r.kernel.org
Cc: patches@...linux.org.uk
---
KernelVersion: v5.17-rc7

 arch/arm/mach-s3c/mach-jive.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- linux-next-20220310.orig/arch/arm/mach-s3c/mach-jive.c
+++ linux-next-20220310/arch/arm/mach-s3c/mach-jive.c
@@ -236,11 +236,11 @@ static int __init jive_mtdset(char *opti
 	unsigned long set;
 
 	if (options == NULL || options[0] == '\0')
-		return 0;
+		return 1;
 
 	if (kstrtoul(options, 10, &set)) {
 		printk(KERN_ERR "failed to parse mtdset=%s\n", options);
-		return 0;
+		return 1;
 	}
 
 	switch (set) {
@@ -256,7 +256,7 @@ static int __init jive_mtdset(char *opti
 		       "using default.", set);
 	}
 
-	return 0;
+	return 1;
 }
 
 /* parse the mtdset= option given to the kernel command line */

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