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-rw-r--r--pc-bios/s390-ccw/iplb.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/pc-bios/s390-ccw/iplb.h b/pc-bios/s390-ccw/iplb.h
index 5357a36d51..ded20c834e 100644
--- a/pc-bios/s390-ccw/iplb.h
+++ b/pc-bios/s390-ccw/iplb.h
@@ -101,10 +101,11 @@ static inline bool manage_iplb(IplParameterBlock *iplb, bool store)
{
register unsigned long addr asm("0") = (unsigned long) iplb;
register unsigned long rc asm("1") = 0;
+ unsigned long subcode = store ? 6 : 5;
asm volatile ("diag %0,%2,0x308\n"
: "+d" (addr), "+d" (rc)
- : "d" (store ? 6 : 5)
+ : "d" (subcode)
: "memory", "cc");
return rc == 0x01;
}