[PATCH v2 2/4] dmaengine: pxa: deprecate '#dma-channels' and '#dma-requests'

[Krzysztof Kozlowski]

The generic properties, used in most of the drivers and defined in
generic dma-common DT bindings, are 'dma-channels' and 'dma-requests'.
Switch to new properties while keeping backward compatibility.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 drivers/dma/pxa_dma.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index 6078cc81892e..e7034f6f3994 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -1365,10 +1365,17 @@ static int pxad_probe(struct platform_device *op)
 
 	of_id = of_match_device(pxad_dt_ids, &op->dev);
 	if (of_id) {
-		of_property_read_u32(op->dev.of_node, "#dma-channels",
-				     &dma_channels);
-		ret = of_property_read_u32(op->dev.of_node, "#dma-requests",
+		/* Parse new and deprecated dma-channels properties */
+		if (of_property_read_u32(op->dev.of_node, "dma-channels",
+					 &dma_channels))
+			of_property_read_u32(op->dev.of_node, "#dma-channels",
+					     &dma_channels);
+		/* Parse new and deprecated dma-requests properties */
+		ret = of_property_read_u32(op->dev.of_node, "dma-requests",
 					   &nb_requestors);
+		if (ret)
+			ret = of_property_read_u32(op->dev.of_node, "#dma-requests",
+						   &nb_requestors);
 		if (ret) {
 			dev_warn(pdev->slave.dev,
 				 "#dma-requests set to default 32 as missing in OF: %d",
-- 
2.32.0