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/[e-mail]
Signed-off-by: Sergey Shtylyov <[e-mail]>
Cc: Brian Cain <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: Christophe Leroy <[e-mail]>
Cc: David S. Miller <[e-mail]>
Cc: Dinh Nguyen <[e-mail]>
Cc: Helge Deller <[e-mail]>
Cc: James Bottomley <[e-mail]>
Cc: Jonas Bonn <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Nicholas Piggin <[e-mail]>
Cc: Oleg Nesterov <[e-mail]>
Cc: Rich Felker <[e-mail]>
Cc: Russell King <[e-mail]>
Cc: Stafford Horne <[e-mail]>
Cc: Stefan Kristiansson <[e-mail]>
Cc: Thomas Bogendoerfer <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: Yoshinori Sato <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

include/linux/regset.h

···
 	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
···
 		*pos += copy;
 		*count -= copy;
 	}
-	return 0;
 }
 
 extern int regset_get(struct task_struct *target,