[Qemu-devel] [PATCH] isa-fdc: assert replaced by proper error exit

[Eduardo Otubo <otubo@redhat.com>]

When not available, isa-fdc falls into assert instead of proper error
exit. This patch fixes this behavior.

Signed-off-by: Eduardo Otubo <otubo@redhat.com>
---
 hw/block/fdc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 401129073b..0b6def4e1d 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -2699,11 +2699,15 @@ static void isabus_fdc_realize(DeviceState *dev, Error **errp)
     fdctrl->dma_chann = isa->dma;
     if (fdctrl->dma_chann != -1) {
         fdctrl->dma = isa_get_dma(isa_bus_from_device(isadev), isa->dma);
-        assert(fdctrl->dma);
+        if (!fdctrl->dma) {
+            error_setg(errp, "isa-fdc not supported");
+            goto error;
+        }
     }
 
     qdev_set_legacy_instance_id(dev, isa->iobase, 2);
     fdctrl_realize_common(dev, fdctrl, &err);
+error:
     if (err != NULL) {
         error_propagate(errp, err);
         return;
-- 
2.13.5