drm/radeon: fix handling of variable sized arrays for router objects
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 27 Aug 2013 16:36:01 +0000 (12:36 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 1 Oct 2013 16:41:00 +0000 (09:41 -0700)
commitd692b2fa12c635ee2fef4ab4d41b5f874754886f
tree968908afa22c5baf7b064bdd5aec80cd498339a1
parentd7e8af270c620e63314612735e0e04ecceaf9ea0
drm/radeon: fix handling of variable sized arrays for router objects

commit fb93df1c2d8b3b1fb16d6ee9e32554e0c038815d upstream.

The table has the following format:

typedef struct _ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT         //usSrcDstTableOffset pointing to this structure
{
  UCHAR               ucNumberOfSrc;
  USHORT              usSrcObjectID[1];
  UCHAR               ucNumberOfDst;
  USHORT              usDstObjectID[1];
}ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT;

usSrcObjectID[] and usDstObjectID[] are variably sized, so we
can't access them directly.  Use pointers and update the offset
appropriately when accessing the Dst members.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/radeon/radeon_atombios.c