diff options
| -rw-r--r-- | hw/xen/xen_pt_msi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c index 5822df5f60..e3d71945cd 100644 --- a/hw/xen/xen_pt_msi.c +++ b/hw/xen/xen_pt_msi.c @@ -75,19 +75,29 @@ static int msi_msix_enable(XenPCIPassthroughState *s, bool enable) { uint16_t val = 0; + int rc; if (!address) { return -1; } - xen_host_pci_get_word(&s->real_device, address, &val); + rc = xen_host_pci_get_word(&s->real_device, address, &val); + if (rc) { + XEN_PT_ERR(&s->dev, "Failed to read MSI/MSI-X register (0x%x), rc:%d\n", + address, rc); + return rc; + } if (enable) { val |= flag; } else { val &= ~flag; } - xen_host_pci_set_word(&s->real_device, address, val); - return 0; + rc = xen_host_pci_set_word(&s->real_device, address, val); + if (rc) { + XEN_PT_ERR(&s->dev, "Failed to write MSI/MSI-X register (0x%x), rc:%d\n", + address, rc); + } + return rc; } static int msi_msix_setup(XenPCIPassthroughState *s, @@ -276,7 +286,7 @@ void xen_pt_msi_disable(XenPCIPassthroughState *s) return; } - xen_pt_msi_set_enable(s, false); + (void)xen_pt_msi_set_enable(s, false); msi_msix_disable(s, msi_addr64(msi), msi->data, msi->pirq, false, msi->initialized); |