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path: root/drivers/dma/of-dma.c
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Diffstat (limited to 'drivers/dma/of-dma.c')
-rw-r--r--drivers/dma/of-dma.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c
index d5fbeaa..ca31f1b 100644
--- a/drivers/dma/of-dma.c
+++ b/drivers/dma/of-dma.c
@@ -159,6 +159,10 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
return ERR_PTR(-ENODEV);
}
+ /* Silently fail if there is not even the "dmas" property */
+ if (!of_find_property(np, "dmas", NULL))
+ return ERR_PTR(-ENODEV);
+
count = of_property_count_strings(np, "dma-names");
if (count < 0) {
pr_err("%s: dma-names property of node '%s' missing or empty\n",