linux-kernel - Re: [PATCH] sparc: vDSO: fix return value of _

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Date:   Sat, 12 Mar 2022 10:05:16 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>, sparclinux@...r.kernel.org
Subject: Re: [PATCH] sparc: vDSO: fix return value of __setup handler

On Fri, Mar 11, 2022 at 08:21:44PM -0800, 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 vdso_setup().
> 
> Fixes: 62d6f3b7b85e ("sparc: vDSO: Silence an uninitialized variable warning")

This fixes tag is wrong.  My patch did not change the return values at
all.

regards,
dan carpenter