diff options
Diffstat (limited to 'drivers/tty/hvc/hvc_dcc.c')
| -rw-r--r-- | drivers/tty/hvc/hvc_dcc.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c index 809920d80a66..82f240fb98f0 100644 --- a/drivers/tty/hvc/hvc_dcc.c +++ b/drivers/tty/hvc/hvc_dcc.c @@ -70,20 +70,27 @@ static const struct hv_ops hvc_dcc_get_put_ops = { static int __init hvc_dcc_console_init(void) { + int ret; + if (!hvc_dcc_check()) return -ENODEV; - hvc_instantiate(0, 0, &hvc_dcc_get_put_ops); - return 0; + /* Returns -1 if error */ + ret = hvc_instantiate(0, 0, &hvc_dcc_get_put_ops); + + return ret < 0 ? -ENODEV : 0; } console_initcall(hvc_dcc_console_init); static int __init hvc_dcc_init(void) { + struct hvc_struct *p; + if (!hvc_dcc_check()) return -ENODEV; - hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128); - return 0; + p = hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128); + + return PTR_ERR_OR_ZERO(p); } device_initcall(hvc_dcc_init); |