[PATCH v3 00/12] of: overlay: clean up device tree overlay code

[frowand.list at gmail.com]

From: Frank Rowand <frank.rowand at sony.com>

I have found the device tree overlay code to be difficult to read and
maintain.  This patch series attempts to improve that situation.

The cleanup includes some changes visible to users of overlays.  The
only in kernel user of overlays is fixed up for those changes.  The
in kernel user is:

   drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c

Following the cleanup patches are a set of patches to fix various
issues.

The first five patches are intended to not make any functional
changes, and are segrated to ease review.

Version 3 applies on top of ac0f3e30d87e "of: overlay: fix memory
leak related to duplicated property"



Changes from version 2:
   - rebase on Rob's dt/next branch
   - 3/12: do missing renames in of_fill_overlay_info() so that 3/12
     and 4/12 build.  This function is removed in 5/12.

Changes from version 1:

  - squash "[PATCH] of: overlay: move resolve phandles into
    of_overlay_apply()" into "[PATCH 09/12] of: overlay: avoid race
    condition between applying multiple overlays"


Frank Rowand (12):
  of: overlay.c: Remove comments that state the obvious, to reduce
    clutter
  of: overlay.c: Convert comparisons to zero or NULL to logical
    expressions
  of: overlay: rename identifiers to more reflect what they do
  of: overlay: rename identifiers in dup_and_fixup_symbol_prop()
  of: overlay: minor restructuring
  of: overlay: detect cases where device tree may become corrupt
  of: overlay: expand check of whether overlay changeset can be removed
  of: overlay: loosen overly strict phandle clash check
  of: overlay: avoid race condition between applying multiple overlays
  of: overlay: simplify applying symbols from an overlay
  of: overlay: remove a dependency on device node full_name
  of: overlay: remove unneeded check for NULL kbasename()

 Documentation/devicetree/overlay-notes.txt   |   12 +-
 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c |   14 +-
 drivers/of/base.c                            |    2 +-
 drivers/of/dynamic.c                         |  137 +++-
 drivers/of/of_private.h                      |   22 +-
 drivers/of/overlay.c                         | 1042 ++++++++++++++++----------
 drivers/of/resolver.c                        |    7 +
 drivers/of/unittest.c                        |   81 +-
 include/linux/of.h                           |   17 +-
 9 files changed, 874 insertions(+), 460 deletions(-)

-- 
Frank Rowand <frank.rowand at sony.com>