From: Stuart Yoder <[email protected]>
Unless discovered devices have the no shareability flag set,
set up coherent dma ops for them.
Signed-off-by: Stuart Yoder <[email protected]>
---
drivers/staging/fsl-mc/bus/mc-bus.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c
index 981e4c2..8bf76d7 100644
--- 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()
*/
--
1.7.9.5