target/linux/bcm53xx/patches-3.18/132-ARM-BCM5301X-Ignore-another-BCM4709-specific-fault-c.patch

   1 From cd43921285658372c0db8019684979edb74eaffd Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Wed, 11 Feb 2015 16:37:05 +0100
   4 Subject: [PATCH soc] ARM: BCM5301X: Ignore another (BCM4709 specific) fault
   5  code
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Broadcom ARM devices seem to generate some fault once per boot. We
  11 already have an ignoring handler for BCM4707/BCM4708, but BCM4709
  12 generates different code.
  13
  14 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  15 ---
  16  arch/arm/mach-bcm/bcm_5301x.c | 9 +++++----
  17  1 file changed, 5 insertions(+), 4 deletions(-)
  18
  19 --- a/arch/arm/mach-bcm/bcm_5301x.c
  20 +++ b/arch/arm/mach-bcm/bcm_5301x.c
  21 @@ -18,15 +18,16 @@ static bool first_fault = true;
  22  static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
  23                                  struct pt_regs *regs)
  24  {
  25 -       if (fsr == 0x1c06 && first_fault) {
  26 +       if ((fsr == 0x1406 || fsr == 0x1c06) && first_fault) {
  27                 first_fault = false;
  28
  29                 /*
  30 -                * These faults with code 0x1c06 happens for no good reason,
  31 -                * possibly left over from the CFE boot loader.
  32 +                * These faults with codes 0x1406 (BCM4709) or 0x1c06 happens
  33 +                * for no good reason, possibly left over from the CFE boot
  34 +                * loader.
  35                  */
  36                 pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
  37 -               addr, fsr);
  38 +                       addr, fsr);
  39
  40                 /* Returning non-zero causes fault display and panic */
  41                 return 0;