regset: make user_regset_copyin_ignore() *void*

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>

diff --git a/include/linux/regset.h b/include/linux/regset.h
index a00765f..9061266 100644 (file)
--- a/include/linux/regset.h
+++ b/include/linux/regset.h
@@ -275,15 +275,15 @@ static inline int user_regset_copyin(unsigned int *pos, unsigned int *count,
        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_ignore(unsigned int *pos,
                *pos += copy;
                *count -= copy;
        }
-       return 0;
 }
 
 extern int regset_get(struct task_struct *target,