svn commit: r256914 - head/sys/powerpc/powerpc

[Nathan Whitehorn]

Author: nwhitehorn
Date: Tue Oct 22 15:47:13 2013
New Revision: 256914
URL: http://svnweb.freebsd.org/changeset/base/256914

Log:
  Ignore registers on devices where the reg property is malformed. Issue a
  warning if this happens under bootverbose. This prevents some
  strange-looking entries in dmesg for SMU devices on Apple G5 systems.

Modified:
  head/sys/powerpc/powerpc/nexus.c

Modified: head/sys/powerpc/powerpc/nexus.c
==============================================================================
--- head/sys/powerpc/powerpc/nexus.c    Tue Oct 22 15:46:21 2013        
(r256913)
+++ head/sys/powerpc/powerpc/nexus.c    Tue Oct 22 15:47:13 2013        
(r256914)
@@ -567,6 +567,12 @@ nexus_setup_dinfo(device_t dev, phandle_
        nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
        if (nreg == -1)
                nreg = 0;
+       if (nreg % (sc->acells + sc->scells) != 0) {
+               if (bootverbose)
+                       device_printf(dev, "Malformed reg property on <%s>\n",
+                           ndi->ndi_obdinfo.obd_name);
+               nreg = 0;
+       }
 
        for (i = 0; i < nreg; i += sc->acells + sc->scells) {
                phys = size = 0;
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