target/linux/layerscape/patches-4.4/7175-staging-fsl-mc-add-quirk-handling-for-dpseci-objects.patch

   1 From 5366dc8896ca7cf028db73643860821b189a1dfd Mon Sep 17 00:00:00 2001
   2 From: Horia Geanta <horia.geanta@nxp.com>
   3 Date: Mon, 11 Apr 2016 11:50:26 -0500
   4 Subject: [PATCH 175/226] staging: fsl-mc: add quirk handling for dpseci
   5  objects < 4.0
   6
   7 dpseci objects < 4.0 are not coherent-- in spite of the fact
   8 that the MC reports them to be coherent in certain versions.
   9 Add a special case to set the no shareability flag for dpseci
  10 objects < 4.0.
  11
  12 Signed-off-by: Horia Geanta <horia.geanta@nxp.com>
  13 (Stuart: reworded commit message, updated comment in patch)
  14 Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
  15 Acked-by: German Rivera <german.rivera@nxp.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17 ---
  18  drivers/staging/fsl-mc/bus/dprc-driver.c |    9 +++++++++
  19  1 file changed, 9 insertions(+)
  20
  21 --- a/drivers/staging/fsl-mc/bus/dprc-driver.c
  22 +++ b/drivers/staging/fsl-mc/bus/dprc-driver.c
  23 @@ -312,6 +312,15 @@ int dprc_scan_objects(struct fsl_mc_devi
  24                                 continue;
  25                         }
  26
  27 +                       /*
  28 +                        * add a quirk for all versions of dpsec < 4.0...none
  29 +                        * are coherent regardless of what the MC reports.
  30 +                        */
  31 +                       if ((strcmp(obj_desc->type, "dpseci") == 0) &&
  32 +                           (obj_desc->ver_major < 4))
  33 +                               obj_desc->flags |=
  34 +                                       DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY;
  35 +
  36                         irq_count += obj_desc->irq_count;
  37                         dev_dbg(&mc_bus_dev->dev,
  38                                 "Discovered object: type %s, id %d\n",