Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a3b398e6 authored by Smitha T Murthy's avatar Smitha T Murthy Committed by Rob Herring
Browse files

of: reserved_mem: set dma_ops for devices using reserved mem 



For some IPs, there may be virtual child devices created and for them its
necessary to set the dma_ops if it's using reserved memory else it will call
the dummy dma_ops during buffer operations for the child devices which will
lead to memory mapping failure.

Signed-off-by: default avatarSmitha T Murthy <smitha.t@samsung.com>
Signed-off-by: default avatarPankaj Dubey <pankaj.dubey@samsung.com>
Acked-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 6f05afcb

drivers/of/of_reserved_mem.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -354,6 +354,10 @@ int of_reserved_mem_device_init_by_idx(struct device *dev, 
		mutex_lock(&of_rmem_assigned_device_mutex);

		mutex_lock(&of_rmem_assigned_device_mutex);

		list_add(&rd->list, &of_rmem_assigned_device_list);

		list_add(&rd->list, &of_rmem_assigned_device_list);

		mutex_unlock(&of_rmem_assigned_device_mutex);

		mutex_unlock(&of_rmem_assigned_device_mutex);

		/* ensure that dma_ops is set for virtual devices

		 * using reserved memory

		 */

		of_dma_configure(dev, np);





		dev_info(dev, "assigned reserved memory node %s\n", rmem->name);

		dev_info(dev, "assigned reserved memory node %s\n", rmem->name);

	} else {

	} else {