Only advertise MSI support if there is an MSI controller of some sort.

ok patrick@

diff --git a/sys/dev/fdt/pciecam.c b/sys/dev/fdt/pciecam.c
index b65ab3c..cae85bd 100644 (file)
--- a/sys/dev/fdt/pciecam.c
+++ b/sys/dev/fdt/pciecam.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pciecam.c,v 1.1 2021/05/17 19:43:37 kettenis Exp $ */
+/* $OpenBSD: pciecam.c,v 1.2 2021/05/19 20:10:38 kettenis Exp $ */
 /*
  * Copyright (c) 2013,2017 Patrick Wildt <patrick@blueri.se>
  *
@@ -262,7 +262,10 @@ pciecam_attach(struct device *parent, struct device *self, void *aux)
        pba.pba_pc = &sc->sc_pc;
        pba.pba_domain = pci_ndomains++;
        pba.pba_bus = 0;
-       pba.pba_flags |= PCI_FLAGS_MSI_ENABLED;
+
+       if (OF_getproplen(sc->sc_node, "msi-map") > 0 ||
+           OF_getproplen(sc->sc_node, "msi-parent") > 0)
+               pba.pba_flags |= PCI_FLAGS_MSI_ENABLED;
 
        config_found(self, &pba, NULL);
 }