msix: clear not only INTA, but all INTx when MSI-X is enabled.

clear not only INTA, but all INTx when MSI-X is enabled.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

hw/msix.c

@@ -158,6 +158,7 @@ void msix_write_config(PCIDevice *dev, uint32_t addr,
 {
     unsigned enable_pos = dev->msix_cap + MSIX_CONTROL_OFFSET;
     int vector;
+    int i;
 
     if (!range_covers_byte(addr, len, enable_pos)) {
         return;
@@ -167,7 +168,9 @@ void msix_write_config(PCIDevice *dev, uint32_t addr,
         return;
     }
 
-    qemu_set_irq(dev->irq[0], 0);
+    for (i = 0; i < PCI_NUM_PINS; ++i) {
+        qemu_set_irq(dev->irq[i], 0);
+    }
 
     if (msix_function_masked(dev)) {
         return;