[SeaBIOS] [PATCH 1/2] virtio-scsi: Set _DRIVER_OK flag before scsi target scanning

[Asias He]

Before we start scsi target scanning, we need to set the
VIRTIO_CONFIG_S_DRIVER_OK flag so the device can do setup properly.

This fix a bug when booting tcm_vhost with seabios.

Signed-off-by: Asias He 
Acked-by: Paolo Bonzini 
---
 src/virtio-scsi.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/virtio-scsi.c b/src/virtio-scsi.c
index 879ddfb..4de1255 100644
--- a/src/virtio-scsi.c
+++ b/src/virtio-scsi.c
@@ -147,6 +147,9 @@ init_virtio_scsi(struct pci_device *pci)
         goto fail;
     }

+    vp_set_status(ioaddr, VIRTIO_CONFIG_S_ACKNOWLEDGE |
+                  VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK);
+
     int i, tot;
     for (tot = 0, i = 0; i < 256; i++)
         tot += virtio_scsi_scan_target(pci, ioaddr, vq, i);
@@ -154,8 +157,6 @@ init_virtio_scsi(struct pci_device *pci)
     if (!tot)
         goto fail;

-    vp_set_status(ioaddr, VIRTIO_CONFIG_S_ACKNOWLEDGE |
-                  VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK);
     return;

fail: