tree e3b283916b166433376f50ade347470b3cdfa4c9
parent 5a3b4e8000c1ce476f5e8babd62c580457561f34
author Colin Ian King <colin.king@canonical.com> 1426536842 -0400
committer Chris Metcalf <cmetcalf@ezchip.com> 1429289921 -0400

arch: tile: fix null pointer dereference on pt_regs pointer

Cppcheck reports the following issue:
[arch/tile/kernel/stack.c:116]: (error) Possible null
  pointer dereference: p

In this case, on reporting on an odd fault, p is set to NULL
and immediately afterwords p is dereferenced iff
!kbt->profile is false.  Rather than doing this check just
return NULL rather than falling through to the potential
null pointer dereference (since the original intentional
outcome would be to return NULL anyhow) for this odd fault
case.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> [tweaked lightly]