staging: fsl-mc: set up coherent dma ops for added devices

Unless discovered devices have the no shareability flag set,
set up coherent dma ops for them.

Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Acked-by: German Rivera <german.rivera@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c
index 981e4c2..8bf76d7 100644 (file)
--- a/drivers/staging/fsl-mc/bus/mc-bus.c
+++ b/drivers/staging/fsl-mc/bus/mc-bus.c
@@ -469,6 +469,10 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
                        goto error_cleanup_dev;
        }
 
+       /* Objects are coherent, unless 'no shareability' flag set. */
+       if (!(obj_desc->flags & DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY))
+               arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
+
        /*
         * The device-specific probe callback will get invoked by device_add()
         */