s390/cpacf: query instructions use unique parameters for compatibility with KMA

The new KMA instruction requires unique parameters. Update __cpacf_query to
generate a compatible assembler instruction.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

arch/s390/include/asm/cpacf.h

@@ -149,8 +149,8 @@ static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
 
 	asm volatile(
 		"	spm 0\n" /* pckmo doesn't change the cc */
-		/* Parameter registers are ignored, but may not be 0 */
-		"0:	.insn	rrf,%[opc] << 16,2,2,2,0\n"
+		/* Parameter regs are ignored, but must be nonzero and unique */
+		"0:	.insn	rrf,%[opc] << 16,2,4,6,0\n"
 		"	brc	1,0b\n"	/* handle partial completion */
 		: "=m" (*mask)
 		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)