it jumps to the parent node without examining the child node.
also with that, it throws "no dma-ranges found for node"
for pci dma-ranges.
this patch fixes device node traversing for dma-ranges.
Reviewed-by: Anup Patel <anup.patel@xxxxxxxxxxxx>
Signed-off-by: Oza Pawandeep <oza.oza@xxxxxxxxxxxx>
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 02b2903..3293d55 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -836,9 +836,6 @@ int of_dma_get_range(struct device_node *np, u64 *dma_addr, u64 *paddr, u64 *siz
while (1) {
naddr = of_n_addr_cells(node);
nsize = of_n_size_cells(node);
- node = of_get_next_parent(node);
- if (!node)
- break;
ranges = of_get_property(node, "dma-ranges", &len);
@@ -852,6 +849,10 @@ int of_dma_get_range(struct device_node *np, u64 *dma_addr, u64 *paddr, u64 *siz
*/
if (!ranges)
break;
+
+ node = of_get_next_parent(node);
+ if (!node)
+ break;
}
if (!ranges) {
--
1.9.1
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