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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: Smitha T Murthy <smitha.t@samsung.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Rob Herring <robh@kernel.org>
hifive-unleashed-5.1
Smitha T Murthy 2016-12-21 11:14:31 +05:30 committed by Rob Herring
parent 6f05afcbb0
commit a3b398e6f2
1 changed files with 4 additions and 0 deletions
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4
drivers/of/of_reserved_mem.c
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@ -354,6 +354,10 @@ int of_reserved_mem_device_init_by_idx(struct device *dev,
mutex_lock(&of_rmem_assigned_device_mutex);
list_add(&rd->list, &of_rmem_assigned_device_list);
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);
} else {