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| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-04-19 11:42:13 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-05-02 21:50:38 +0530 |
| commit | f22eb1402244885126c4263eb36b857e4182dd6f (patch) | |
| tree | 7767872c251466aa91c09fb85efd957418f4bf03 | |
| parent | af31826d9b1ce432e033f0e91529aa1013076482 (diff) | |
| download | linux-stable-f22eb1402244885126c4263eb36b857e4182dd6f.tar.gz linux-stable-f22eb1402244885126c4263eb36b857e4182dd6f.tar.bz2 linux-stable-f22eb1402244885126c4263eb36b857e4182dd6f.zip | |
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>
| -rw-r--r-- | drivers/dma/of-dma.c | 11 |
1 files 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; - - 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); |