tree 2f3dbb20f08bfbbdd1f4da144f9c18fec9cce7aa
parent 144ecf310eb52d9df607b9b7eeb096743e232a96
author Huang Shijie <shijie8@gmail.com> 1288218892 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1288227798 -0700

kernel/resource.c: handle reinsertion of an already-inserted resource

If the same resource is inserted to the resource tree (maybe not on
purpose), a dead loop will be created.  In this situation, The kernel does
not report any warning or error :(

  The command below will show a endless print.
  #cat /proc/iomem

[akpm@linux-foundation.org: add WARN_ON()]
Signed-off-by: Huang Shijie <shijie8@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>