[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 <[email protected]>
RyanHsu · May 23, 2011 · 5bd4187 · 5bd4187
1 parent 5f420c5
commit 5bd4187
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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 |