Fix pci_add nic not to exit on bad model

Monitor command "pci_add ADDR nic model=MODEL" uses pci_nic_init() to
create the NIC.  When MODEL is unknown or "?", this prints to stderr
and terminates the program.

Change pci_nic_init() not to treat "?" specially, and to return NULL
on failure.  Switch uses during startup to new convenience wrapper
pci_nic_init_nofail(), which behaves just like pci_nic_init() used to
do.

Bonus bug fix: we now check for qdev_init() failing there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/ppce500_mpc8544ds.c b/hw/ppce500_mpc8544ds.c
index 504419458b..ea30816b32 100644
--- a/hw/ppce500_mpc8544ds.c
+++ b/hw/ppce500_mpc8544ds.c
@@ -219,7 +219,7 @@ static void mpc8544ds_init(ram_addr_t ram_size,
     if (pci_bus) {
         /* Register network interfaces. */
         for (i = 0; i < nb_nics; i++) {
-            pci_nic_init(&nd_table[i], "virtio", NULL);
+            pci_nic_init_nofail(&nd_table[i], "virtio", NULL);
         }
     }