From f22eb1402244885126c4263eb36b857e4182dd6f Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 19 Apr 2013 11:42:13 +0200 Subject: [PATCH] dma: of: Fix of_node reference leak 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 Acked-by: Arnd Bergmann Reviewed-by: Jon Hunter Signed-off-by: Vinod Koul --- 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 8266893fef45..2882403a39cf 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; + if (ofdma) { + chan = ofdma->of_dma_xlate(&dma_spec, 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);