target/linux/ppc40x/patches-3.6/001-powerpc-add-missing-NULL-terminator-to-avoid-boot-pa.patch

   1 From 107b76e67aa0447fc4ea5594823f8ffd2699fbc7 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Thu, 20 Dec 2012 14:22:38 +0100
   4 Subject: [PATCH] powerpc: add missing NULL terminator to avoid boot panic on
   5  PPC40x
   6
   7 The missing NULL terminator can cause a panic on
   8 PPC405 boards during boot:
   9
  10   Linux/PowerPC load: console=ttyS0,115200 root=/dev/mtdblock1 rootfstype=squashfs,jffs2 noinitrd init=/etc/preinit
  11   Finalizing device tree... flat tree at 0x6a5160
  12   bootconsole [udbg0] enabled
  13   Page fault in user mode with in_atomic() = 1 mm = (null)
  14   NIP = c0275f50  MSR = fffffffe
  15   Oops: Weird page fault, sig: 11 [#1]
  16   PowerPC 40x Platform
  17   Modules linked in:
  18   NIP: c0275f50 LR: c0275f60 CTR: c0280000
  19   REGS: c0275eb0 TRAP: 636f7265   Not tainted  (3.7.1)
  20   MSR: fffffffe <VEC,VSX,EE,PR,FP,ME,SE,BE,IR,DR,PMM,RI> CR: c06a6190  XER: 00000001
  21   TASK = c02662a8[0] 'swapper' THREAD: c0274000
  22   GPR00: c0275ec0 c000c658 c027c4bf 00000000 c0275ee0 c000a0ec c020a1a8 c020a1f0
  23   GPR08: c020f631 c020f404 c025f078 c025f080 c0275f10
  24    Call Trace:
  25    ---[ end trace 31fd0ba7d8756001 ]---
  26
  27   Kernel panic - not syncing: Attempted to kill the idle task!
  28
  29 The panic happens since commit 9597abe00c1bab2aedce6b49866bf6d1e81c9eed
  30 (sections: fix section conflicts in arch/powerpc), however the root
  31 cause of this is that the NULL terminator were not added in commit
  32 a4f740cf33f7f6c164bbde3c0cdbcc77b0c4997c (of/flattree: Add of_flat_dt_match()
  33 helper function).
  34
  35 Cc: Grant Likely <grant.likely@secretlab.ca>
  36 Cc: <stable@vger.kernel.org>
  37 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  38 ---
  39  arch/powerpc/platforms/40x/ppc40x_simple.c |    3 ++-
  40  1 file changed, 2 insertions(+), 1 deletion(-)
  41
  42 --- a/arch/powerpc/platforms/40x/ppc40x_simple.c
  43 +++ b/arch/powerpc/platforms/40x/ppc40x_simple.c
  44 @@ -57,7 +57,8 @@ static const char *board[] __initdata =
  45         "amcc,makalu",
  46         "apm,klondike",
  47         "est,hotfoot",
  48 -       "plathome,obs600"
  49 +       "plathome,obs600",
  50 +       NULL
  51  };
  52
  53  static int __init ppc40x_probe(void)