[S390] iucv cr0 enablement bit
Do not set the cr0 enablement bit for iucv by default in head[31|64].S,
move the enablement to iucv_init in the iucv base layer.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index dd0d1e2..f21954b 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -45,7 +45,7 @@
# virtual and never return ...
.align 8
.Lentry:.long 0x00080000,0x80000000 + _stext
-.Lctl: .long 0x04b50002 # cr0: various things
+.Lctl: .long 0x04b50000 # cr0: various things
.long 0 # cr1: primary space segment table
.long .Lduct # cr2: dispatchable unit control table
.long 0 # cr3: instruction authorization
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 1886028..b6d3013 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -46,7 +46,7 @@
.align 16
.LPG1:
.Lentry:.quad 0x0000000180000000,_stext
-.Lctl: .quad 0x04350002 # cr0: various things
+.Lctl: .quad 0x04350000 # cr0: various things
.quad 0 # cr1: primary space segment table
.quad .Lduct # cr2: dispatchable unit control table
.quad 0 # cr3: instruction authorization
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 7f912491..f2b7138 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -1988,12 +1988,13 @@
rc = -EPROTONOSUPPORT;
goto out;
}
+ ctl_set_bit(0, 1);
rc = iucv_query_maxconn();
if (rc)
- goto out;
+ goto out_ctl;
rc = register_external_interrupt(0x4000, iucv_external_interrupt);
if (rc)
- goto out;
+ goto out_ctl;
iucv_root = root_device_register("iucv");
if (IS_ERR(iucv_root)) {
rc = PTR_ERR(iucv_root);
@@ -2055,6 +2056,8 @@
root_device_unregister(iucv_root);
out_int:
unregister_external_interrupt(0x4000, iucv_external_interrupt);
+out_ctl:
+ ctl_clear_bit(0, 1);
out:
return rc;
}
