linux-kernel - [PATCH 0/3] of/fdt: Rework early FDT scanning functions

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Date:   Thu, 18 Nov 2021 12:12:09 -0600
From:   Rob Herring <robh@...nel.org>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Frank Rowand <frowand.list@...il.com>,
        John Crispin <john@...ozen.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 0/3] of/fdt: Rework early FDT scanning functions

The early FDT scanning functions use of_scan_flat_dt() which implements 
its own node walking method. This function predates libfdt and is an 
unnecessary indirection. This series reworks 
early_init_dt_scan_chosen(), early_init_dt_scan_root(), and 
early_init_dt_scan_memory() to be called directly and use libfdt calls.

Ultimately, I want to remove of_scan_flat_dt(). Most of the remaining 
of_scan_flat_dt() users are in powerpc.

Rob


Rob Herring (3):
  of/fdt: Rework early_init_dt_scan_chosen() to call directly
  of/fdt: Rework early_init_dt_scan_root() to call directly
  of/fdt: Rework early_init_dt_scan_memory() to call directly

 arch/mips/ralink/of.c                |  16 +---
 arch/powerpc/kernel/prom.c           |  22 ++---
 arch/powerpc/mm/nohash/kaslr_booke.c |   4 +-
 drivers/of/fdt.c                     | 121 ++++++++++++++-------------
 include/linux/of_fdt.h               |   9 +-
 5 files changed, 79 insertions(+), 93 deletions(-)

-- 
2.32.0