[Qemu-devel] [PATCH v3 20/26] q35: smbus: Remove PCI_STATUS_SIG_SYSTEM_ERROR and PCI_STATUS_DETECTED_PARITY from w1cmask

[Jason Baron <jbaron@redhat.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

Both bits are added to the write-1-to-clear mask by default. As the
smbus device does not allow writes at all, we have to remove it from
that mask, also to avoid triggering a runtime assertion.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
---
 hw/smbus_ich9.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/hw/smbus_ich9.c b/hw/smbus_ich9.c
index 8c2cd44..e856063 100644
--- a/hw/smbus_ich9.c
+++ b/hw/smbus_ich9.c
@@ -94,6 +94,10 @@ static int ich9_smbus_initfn(PCIDevice *d)
 {
     ICH9SMBState *s = ICH9_SMB_DEVICE(d);
 
+    pci_set_word(d->w1cmask + PCI_STATUS,
+                 pci_get_word(d->w1cmask + PCI_STATUS) &
+                 ~(PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
+
     /* TODO? D31IP.SMIP in chipset configuration space */
     pci_config_set_interrupt_pin(d->config, 0x01); /* interrupt pin 1 */
 
-- 
1.7.1