[S390] chsc headers userspace cleanup

Kernel headers shouldn't expose functions to userspace.

Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>

include/asm-s390/Kbuild

@@ -8,9 +8,9 @@ header-y += ucontext.h
 header-y += vtoc.h
 header-y += zcrypt.h
 header-y += kvm.h
-header-y += schid.h
 header-y += chsc.h
 
 unifdef-y += cmb.h
 unifdef-y += debug.h
 unifdef-y += chpid.h
+unifdef-y += schid.h

include/asm-s390/chpid.h

@@ -20,6 +20,9 @@ struct chp_id {
 	u8 id;
 } __attribute__((packed));
 
+#ifdef __KERNEL__
+#include <asm/cio.h>
+
 static inline void chp_id_init(struct chp_id *chpid)
 {
 	memset(chpid, 0, sizeof(struct chp_id));
@@ -40,9 +43,6 @@ static inline void chp_id_next(struct chp_id *chpid)
 	}
 }
 
-#ifdef __KERNEL__
-#include <asm/cio.h>
-
 static inline int chp_id_is_valid(struct chp_id *chpid)
 {
 	return (chpid->cssid <= __MAX_CSSID);

include/asm-s390/schid.h

@@ -10,6 +10,7 @@ struct subchannel_id {
 	__u32 sch_no : 16;
 } __attribute__ ((packed, aligned(4)));
 
+#ifdef __KERNEL__
 
 /* Helper function for sane state of pre-allocated subchannel_id. */
 static inline void
@@ -25,4 +26,6 @@ schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
 	return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
 }
 
+#endif /* __KERNEL__ */
+
 #endif /* ASM_SCHID_H */