diff options
Diffstat (limited to 'extras')
| -rw-r--r-- | extras/mini-os/pcifront.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/extras/mini-os/pcifront.c b/extras/mini-os/pcifront.c index ed402a8a19..718abf1d73 100644 --- a/extras/mini-os/pcifront.c +++ b/extras/mini-os/pcifront.c @@ -276,15 +276,24 @@ void pcifront_scan(struct pcifront_dev *dev, void (*func)(unsigned int domain, u { char *path; int i, n, len; - char *s, *msg; + char *s, *msg = NULL, *err = NULL; unsigned int domain, bus, slot, fun; if (!dev) dev = pcidev; - if (!dev) - dev = init_pcifront(NULL); - if (!dev) - return; + if (!dev) { + xenbus_event_queue events = NULL; + char *fe_state = "device/pci/0/state"; + xenbus_watch_path_token(XBT_NIL, fe_state, fe_state, &events); + while ((err = xenbus_read(XBT_NIL, fe_state, &msg)) != NULL || msg[0] != '4') { + free(msg); + free(err); + printk("pcifront_scan: waiting for pcifront to become ready\n"); + xenbus_wait_for_watch(&events); + } + xenbus_unwatch_path_token(XBT_NIL, fe_state, fe_state); + dev = pcidev; + } len = strlen(dev->backend) + 1 + 5 + 10 + 1; path = (char *) malloc(len); |