Patch "sparc: vDSO: fix return value of __setup handler" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    sparc: vDSO: fix return value of __setup handler

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     sparc-vdso-fix-return-value-of-__setup-handler.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 0ce48924053f19b4bff9d461d0515e9e5300405e
Author: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Date:   Sat Feb 10 21:28:08 2024 -0800

    sparc: vDSO: fix return value of __setup handler
    
    [ Upstream commit 5378f00c935bebb846b1fdb0e79cb76c137c56b5 ]
    
    __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: 9a08862a5d2e ("vDSO for sparc")
    Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
    Reported-by: Igor Zhbanov <izh1979@xxxxxxxxx>
    Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@xxxxxxxxxxxx
    Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
    Cc: sparclinux@xxxxxxxxxxxxxxx
    Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
    Cc: Nick Alcock <nick.alcock@xxxxxxxxxx>
    Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
    Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
    Cc: stable@xxxxxxxxxxxxxxx
    Cc: Arnd Bergmann <arnd@xxxxxxxx>
    Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
    Signed-off-by: Andreas Larsson <andreas@xxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240211052808.22635-1-rdunlap@xxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
index cc19e09b0fa1e..b073153c711ad 100644
--- a/arch/sparc/vdso/vma.c
+++ b/arch/sparc/vdso/vma.c
@@ -449,9 +449,8 @@ static __init int vdso_setup(char *s)
 	unsigned long val;
 
 	err = kstrtoul(s, 10, &val);
-	if (err)
-		return err;
-	vdso_enabled = val;
-	return 0;
+	if (!err)
+		vdso_enabled = val;
+	return 1;
 }
 __setup("vdso=", vdso_setup);




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