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Diffstat (limited to 'hw/xen/xen_pt_msi.c')
-rw-r--r--hw/xen/xen_pt_msi.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c
index 263e0514a2..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,
@@ -220,7 +230,7 @@ static int msi_msix_disable(XenPCIPassthroughState *s,
* MSI virtualization functions
*/
-int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool enable)
+static int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool enable)
{
XEN_PT_LOG(&s->dev, "%s MSI.\n", enable ? "enabling" : "disabling");
@@ -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);