of_dma_request_slave_channel() currently does not drop the reference to the
dma_spec of_node if no DMA controller matching the of_node could be found. This
patch fixes it by always calling of_node_put().
Signed-off-by: Lars-Peter Clausen <l...@metafoo.de>
---
drivers/dma/of-dma.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c
index 8266893..2882403 100644
--- a/drivers/dma/of-dma.c
+++ b/drivers/dma/of-dma.c
@@ -221,12 +221,13 @@ struct dma_chan *of_dma_request_slave_channel(struct
device_node *np,
ofdma = of_dma_get_controller(&dma_spec);
- if (!ofdma)
- continue;
-
- chan = ofdma->of_dma_xlate(&dma_spec, ofdma);
+ if (ofdma) {
+ chan = ofdma->of_dma_xlate(&dma_spec, ofdma);
- of_dma_put_controller(ofdma);
+ of_dma_put_controller(ofdma);
+ } else {
+ chan = NULL;
+ }
of_node_put(dma_spec.np);
--
1.8.0
--
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