If the i2c device tree nodes don't contain the dmas and dma-names property, an
error is displayed for each i2c device:
of_dma_request_slave_channel: dma-names property of node
'/soc/aips-bus@02100000/i2c@021a0000' missing or empty
This patch avoids calling dma_request_slave_channel if the dma-names property
does not exist in the device tree in the first place.
Signed-off-by: Philipp Zabel <[email protected]>
---
drivers/i2c/busses/i2c-imx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 7f3a9fe..f0d9904 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -288,6 +288,9 @@ static void i2c_imx_dma_request(struct imx_i2c_struct
*i2c_imx,
struct device *dev = &i2c_imx->adapter.dev;
int ret;
+ if (!of_get_property(dev->of_node, "dma-names", NULL))
+ return;
+
dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
if (!dma)
return;
--
2.1.4
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