pci+linux: make 32bits domain warnings non-critical

This issue seems to happen more frequently, don't report it unless
all errors are enabled.

This warning means that some PCI devices might be missing.
That's not critical enough to warn users (most of them know nothing about hwloc).
For the record, CUDA init warnings were demoted the same a couple releases ago.

Refs #354

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

hwloc/topology-linux.c

@@ -6820,7 +6820,7 @@ hwloc_linuxfs_pci_look_pcidevices(struct hwloc_backend *backend)
 #ifndef HWLOC_HAVE_32BITS_PCI_DOMAIN
     if (domain > 0xffff) {
       static int warned = 0;
-      if (!warned && hwloc_hide_errors() < 2)
+      if (!warned && !hwloc_hide_errors())
 	fprintf(stderr, "hwloc/linux: Ignoring PCI device with non-16bit domain.\nPass --enable-32bits-pci-domain to configure to support such devices\n(warning: it would break the library ABI, don't enable unless really needed).\n");
       warned = 1;
       continue;

hwloc/topology-pci.c

@@ -1,6 +1,6 @@
 /*
  * Copyright © 2009 CNRS
- * Copyright © 2009-2021 Inria.  All rights reserved.
+ * Copyright © 2009-2022 Inria.  All rights reserved.
  * Copyright © 2009-2011, 2013 Université Bordeaux
  * Copyright © 2014-2018 Cisco Systems, Inc.  All rights reserved.
  * Copyright © 2015      Research Organization for Information Science
@@ -205,7 +205,7 @@ hwloc_look_pci(struct hwloc_backend *backend, struct hwloc_disc_status *dstatus)
 #ifndef HWLOC_HAVE_32BITS_PCI_DOMAIN
     if (domain > 0xffff) {
       static int warned = 0;
-      if (!warned && hwloc_hide_errors() < 2)
+      if (!warned && !hwloc_hide_errors())
 	fprintf(stderr, "hwloc/pci: Ignoring PCI device with non-16bit domain.\nPass --enable-32bits-pci-domain to configure to support such devices\n(warning: it would break the library ABI, don't enable unless really needed).\n");
       warned = 1;
       continue;