[PATCH 0/1] Improve device tree directory sorting

[Curt Brune]

This patch improves the device tree directory sorting.

Previously the sorting algorithm would result in the following ordering for a
Freescale P2020 SoC device (Rooted under: /proc/device-tree/soc at ffe00000)

  #address-cells
  #size-cells
  .
  ..
  bus-frequency
  compatible
  device_type
  i2c at 3000
  i2c at 3100
  mdio at 24520
  msi at 41600
  mdio at 26520
  serial at 4600
  ethernet at 26000
  global-utilities at e0000
  memory-controller at 2000
  l2-cache-controller at 20000
  name
  pic at 40000
  ranges
  sdhci at 2e000
  serial at 4500

Ideally 'serial at 4500' would come before 'serial at 4600'.  This would
cause the new kexec-ed kernel to have the serial consoles detected in
the wrong order, i.e. ttyS0 and ttyS1 are swapped.  

Using the attached patch the same directory is ordered as:

  #address-cells
  #size-cells
  .
  ..
  bus-frequency
  compatible
  device_type
  ethernet at 26000
  global-utilities at e0000
  i2c at 3000
  i2c at 3100
  l2-cache-controller at 20000
  mdio at 24520
  mdio at 26520
  memory-controller at 2000
  msi at 41600
  name
  pic at 40000
  ranges
  sdhci at 2e000
  serial at 4500
  serial at 4600

Curt Brune (1):
  Improve device tree directory sorting

 kexec/arch/ppc/fs2dt.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

-- 
1.9.1