of/platform: teardown DMA mappings on device destruction

Now that we can create and attach to IOMMU domains via of_dma_configure,
make sure we give the architecture a chance to tear them down when a
platform or amba device is destroyed.

Acked-by: Rob Herring <robh@kernel.org>
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 5b33c6a21807..3f61d668ded7 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -526,6 +526,7 @@ static int of_platform_device_destroy(struct device *dev, void *data)
                 amba_device_unregister(to_amba_device(dev));
 #endif
 
+        of_dma_deconfigure(dev);
         of_node_clear_flag(dev->of_node, OF_POPULATED);
         of_node_clear_flag(dev->of_node, OF_POPULATED_BUS);
         return 0;