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Commit 5beab991 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

[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: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 89c9b66b

arch/s390/kernel/head31.S

+1 −1
Original line number Diff line number Diff line
@@ -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

arch/s390/kernel/head64.S

+1 −1
Original line number Diff line number Diff line
@@ -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

net/iucv/iucv.c

+5 −2
Original line number Diff line number Diff line
@@ -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;

}