[Differential] [Request, 6 lines] D2155: Fix bug in xrefinfo_find() for 64-bit platforms

[zbb (Zbigniew Bodek)]

zbb created this revision.
zbb added reviewers: ian, nwhitehorn.
zbb added subscribers: freebsd-arm, freebsd-mips, PowerPC.

REVISION SUMMARY
  uintptr_t may be 64-bit on some platforms, therefore when
  finding xrefinfo by pointer to device the high word is being
  cut off due to cast to phandle_t which is 32-bit long by definition.
  Due to that we loose the high word of the address to compare with
  xi->dev's address.
  To fix that, first argument of xrefinfo_find() is extended to
  uintptr_t and is being cast to appropriate type (phandle_t)
  when compared.
  
  Submitted by:   Zbigniew Bodek <zbb at semihalf.com>
  Obtained from: Semihalf

REVISION DETAIL
  https://reviews.freebsd.org/D2155

AFFECTED FILES
  sys/dev/ofw/openfirm.c

To: zbb, ian, nwhitehorn
Cc: sson, jhibbits, rpaulo, freebsd-mips, freebsd-arm