s390/cpcmd: Convert to use flag output macros

Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Author: hcahca

arch/s390/kernel/cpcmd.c

@@ -20,6 +20,7 @@
 #include <asm/diag.h>
 #include <asm/ebcdic.h>
 #include <asm/cpcmd.h>
+#include <asm/asm.h>
 
 static DEFINE_SPINLOCK(cpcmd_lock);
 static char cpcmd_buf[241];
@@ -45,12 +46,11 @@ static int diag8_response(int cmdlen, char *response, int *rlen)
 	ry.odd	= *rlen;
 	asm volatile(
 		"	diag	%[rx],%[ry],0x8\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
-		: [cc] "=&d" (cc), [ry] "+&d" (ry.pair)
+		CC_IPM(cc)
+		: CC_OUT(cc, cc), [ry] "+d" (ry.pair)
 		: [rx] "d" (rx.pair)
-		: "cc");
-	if (cc)
+		: CC_CLOBBER);
+	if (CC_TRANSFORM(cc))
 		*rlen += ry.odd;
 	else
 		*rlen = ry.odd;