target/linux/layerscape/patches-4.4/7171-staging-fsl-mc-set-up-coherent-dma-ops-for-added-dev.patch

   1 From 3657147d6fea1977c07373325626bf50fe15bcfc Mon Sep 17 00:00:00 2001
   2 From: Stuart Yoder <stuart.yoder@nxp.com>
   3 Date: Mon, 11 Apr 2016 11:49:13 -0500
   4 Subject: [PATCH 171/226] staging: fsl-mc: set up coherent dma ops for added
   5  devices
   6
   7 Unless discovered devices have the no shareability flag set,
   8 set up coherent dma ops for them.
   9
  10 Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
  11 Acked-by: German Rivera <german.rivera@nxp.com>
  12 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  13 ---
  14  drivers/staging/fsl-mc/bus/mc-bus.c |    4 ++++
  15  1 file changed, 4 insertions(+)
  16
  17 --- a/drivers/staging/fsl-mc/bus/mc-bus.c
  18 +++ b/drivers/staging/fsl-mc/bus/mc-bus.c
  19 @@ -469,6 +469,10 @@ int fsl_mc_device_add(struct dprc_obj_de
  20                         goto error_cleanup_dev;
  21         }
  22
  23 +       /* Objects are coherent, unless 'no shareability' flag set. */
  24 +       if (!(obj_desc->flags & DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY))
  25 +               arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
  26 +
  27         /*
  28          * The device-specific probe callback will get invoked by device_add()
  29          */