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of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc
[sagit-ice-cold/kernel_xiaomi_msm8998.git]
/
drivers
/
of
/
address.c
diff --git
a/drivers/of/address.c
b/drivers/of/address.c
index
4fe5fe2
..
b3bf876
100644
(file)
--- a/
drivers/of/address.c
+++ b/
drivers/of/address.c
@@
-1009,12
+1009,16
@@
EXPORT_SYMBOL_GPL(of_dma_get_range);
* @np: device node
*
* It returns true if "dma-coherent" property was found
* @np: device node
*
* It returns true if "dma-coherent" property was found
- * for this device in DT.
+ * for this device in the DT, or if DMA is coherent by
+ * default for OF devices on the current platform.
*/
bool of_dma_is_coherent(struct device_node *np)
{
struct device_node *node = of_node_get(np);
*/
bool of_dma_is_coherent(struct device_node *np)
{
struct device_node *node = of_node_get(np);
+ if (IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT))
+ return true;
+
while (node) {
if (of_property_read_bool(node, "dma-coherent")) {
of_node_put(node);
while (node) {
if (of_property_read_bool(node, "dma-coherent")) {
of_node_put(node);