of_dma_request_slave_channel should return either pointer for valid dma_chan or ERR_PTR() error code, NULL is not expected to be returned.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com CC: Grant Likely grant.likely@linaro.org CC: Rob Herring robh+dt@kernel.org --- include/linux/of_dma.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index 98ba7525929e..0fd80be152c4 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -80,7 +80,7 @@ static inline int of_dma_router_register(struct device_node *np, static inline struct dma_chan *of_dma_request_slave_channel(struct device_node *np, const char *name) { - return NULL; + return ERR_PTR(-ENODEV); }
static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec,