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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 <lars@metafoo.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Lars-Peter Clausen 2013-04-19 11:42:13 +02:00 committed by Vinod Koul
parent af31826d9b
commit f22eb14022
1 changed files with 6 additions and 5 deletions
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11
drivers/dma/of-dma.c
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@ -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);