* [PATCH 07/14] staging: fsl-mc: set up coherent dma ops for added devices
@ 2016-04-11 16:49 Stuart Yoder
0 siblings, 0 replies; only message in thread
From: Stuart Yoder @ 2016-04-11 16:49 UTC (permalink / raw)
To: gregkh, german.rivera
Cc: devel, linux-kernel, agraf, arnd, leoyang.li, Stuart Yoder
From: Stuart Yoder <stuart.yoder@nxp.com>
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>
---
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
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