[S390] cpu hotplug: fix external interrupt subclass mask handling

When disabling a cpu all external interrupt subclass masks in control
register 0 get cleared. However instead of the service signal subclass
mask bit an unused bit got cleared.
Accidently (or luckily) the service subclass mask gets cleared with the
pfault_fini() call that happens just before the rest of the subclass
mask bits get cleared.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index fed71dc..f8e85ec 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -654,8 +654,8 @@ int __cpu_disable(void)
 
        /* disable all external interrupts */
        cr_parms.orvals[0] = 0;
-       cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 12 |
-                               1 << 11 | 1 << 10 | 1 <<  6 | 1 <<  4);
+       cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 11 |
+                               1 << 10 | 1 <<  9 | 1 <<  6 | 1 <<  4);
        /* disable all I/O interrupts */
        cr_parms.orvals[6] = 0;
        cr_parms.andvals[6] = ~(1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 |