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[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>
This commit is contained in:
Martin Schwidefsky 2011-07-24 10:48:28 +02:00
parent 89c9b66b10
commit 5beab99100
3 changed files with 7 additions and 4 deletions
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2
arch/s390/kernel/head31.S
View File

@ -45,7 +45,7 @@ ENTRY(startup_continue)
# 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

2
arch/s390/kernel/head64.S
View File

@ -46,7 +46,7 @@ ENTRY(startup_continue)
.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

7
net/iucv/iucv.c
View File

@ -1988,12 +1988,13 @@ static int __init iucv_init(void)
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 @@ out_free:
root_device_unregister(iucv_root);
out_int:
unregister_external_interrupt(0x4000, iucv_external_interrupt);
out_ctl:
ctl_clear_bit(0, 1);
out:
return rc;
}