+ regset-make-user_regset_copyin_ignore-void.patch added to mm-nonmm-unstable branch

+ regset-make-user_regset_copyin_ignore-void.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: regset: make user_regset_copyin_ignore() *void*
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     regset-make-user_regset_copyin_ignore-void.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/regset-make-user_regset_copyin_ignore-void.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sergey Shtylyov <s.shtylyov@omp.ru>
Subject: regset: make user_regset_copyin_ignore() *void*
Date: Sat, 15 Oct 2022 00:22:35 +0300

user_regset_copyin_ignore() apparently cannot fail and so always returns 0.
Let's make this function return *void* instead of *int*...

Link: https://lkml.kernel.org/r/20221014212235.10770-14-s.shtylyov@omp.ru
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/regset.h |   15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

--- a/include/linux/regset.h~regset-make-user_regset_copyin_ignore-void
+++ a/include/linux/regset.h
@@ -275,15 +275,15 @@ static inline int user_regset_copyin(uns
 	return 0;
 }
 
-static inline int user_regset_copyin_ignore(unsigned int *pos,
-					    unsigned int *count,
-					    const void **kbuf,
-					    const void __user **ubuf,
-					    const int start_pos,
-					    const int end_pos)
+static inline void user_regset_copyin_ignore(unsigned int *pos,
+					     unsigned int *count,
+					     const void **kbuf,
+					     const void __user **ubuf,
+					     const int start_pos,
+					     const int end_pos)
 {
 	if (*count == 0)
-		return 0;
+		return;
 	BUG_ON(*pos < start_pos);
 	if (end_pos < 0 || *pos < end_pos) {
 		unsigned int copy = (end_pos < 0 ? *count
@@ -295,7 +295,6 @@ static inline int user_regset_copyin_ign
 		*pos += copy;
 		*count -= copy;
 	}
-	return 0;
 }
 
 extern int regset_get(struct task_struct *target,
_

Patches currently in -mm which might be from s.shtylyov@omp.ru are

arc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
arm-ptrace-user_regset_copyin_ignore-always-returns-0.patch
arm64-ptrace-user_regset_copyin_ignore-always-returns-0.patch
hexagon-ptrace-user_regset_copyin_ignore-always-returns-0.patch
ia64-ptrace-user_regset_copyin_ignore-always-returns-0.patch
mips-ptrace-user_regset_copyin_ignore-always-returns-0.patch
nios2-ptrace-user_regset_copyin_ignore-always-returns-0.patch
openrisc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
parisc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
powerpc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
sh-ptrace-user_regset_copyin_ignore-always-returns-0.patch
sparc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
regset-make-user_regset_copyin_ignore-void.patch