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[4/8] hw/qxl: exit on failure to register qxl interface

Message ID 1349693391-32704-5-git-send-email-kraxel@redhat.com
State New
Headers show

Commit Message

Gerd Hoffmann Oct. 8, 2012, 10:49 a.m. UTC 
From: Alon Levy <alevy@redhat.com>

This prevents a segfault later on when the device reset handler
tries to access a NULL ssd.worker since interface_attach_worker has
not been called.

Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/qxl.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
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Patch

diff --git a/hw/qxl.c b/hw/qxl.c
index eb7707c..e99ed55 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -2037,7 +2037,11 @@  static int qxl_init_common(PCIQXLDevice *qxl)
 
     qxl->ssd.qxl.base.sif = &qxl_interface.base;
     qxl->ssd.qxl.id = qxl->id;
-    qemu_spice_add_interface(&qxl->ssd.qxl.base);
+    if (qemu_spice_add_interface(&qxl->ssd.qxl.base) != 0) {
+        error_report("qxl interface %d.%d not supported by spice-server\n",
+                     SPICE_INTERFACE_QXL_MAJOR, SPICE_INTERFACE_QXL_MINOR);
+        return -1;
+    }
     qemu_add_vm_change_state_handler(qxl_vm_change_state_handler, qxl);
 
     init_pipe_signaling(qxl);