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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2007-11-05 11:10:08 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-11-05 11:10:16 +0100 |
| commit | 0fc3ddd67a6781238b038165d9dd8c1f9ba81111 (patch) | |
| tree | 84058cff756c8424c4ee06edfc3db81fbee80075 /drivers/s390/net | |
| parent | [S390] cio: use INIT_WORK to initialize struct work. (diff) | |
| download | linux-dev-0fc3ddd67a6781238b038165d9dd8c1f9ba81111.tar.xz linux-dev-0fc3ddd67a6781238b038165d9dd8c1f9ba81111.zip | |
[S390] Fix smsgiucv init on no iucv machines
smsgiucv is a driver that relies on iucv to work properly. If
iucv ans smsgiucv are compiled into the kernel and run on an
lpar the following scenario happens:
iucv is initialized early as a subsystem. It checks for z/VM and
returns with EPROTONOTSUPPORT. Later smsgiucv tries to run
driver_register with iucv_bus as bus. As this bus is not
initialized the driver core and list debugging issue several
warnings and oopses.
Solution is to let smsgiucv also check for z/VM and return
EPROTONOTSUPPORT as well.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/net')
| -rw-r--r-- | drivers/s390/net/smsgiucv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c index 3ccca5871fdf..47bb47b48581 100644 --- a/drivers/s390/net/smsgiucv.c +++ b/drivers/s390/net/smsgiucv.c @@ -148,6 +148,10 @@ static int __init smsg_init(void) { int rc; + if (!MACHINE_IS_VM) { + rc = -EPROTONOSUPPORT; + goto out; + } rc = driver_register(&smsg_driver); if (rc != 0) goto out; |