diff options
| -rw-r--r-- | drivers/dma/dmaengine.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index d07ef7dc04e..1b2df59d1d6 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -62,6 +62,8 @@ #include <linux/rculist.h> #include <linux/idr.h> #include <linux/slab.h> +#include <linux/acpi.h> +#include <linux/acpi_dma.h> #include <linux/of_dma.h> static DEFINE_MUTEX(dma_list_mutex); @@ -564,6 +566,10 @@ struct dma_chan *dma_request_slave_channel(struct device *dev, char *name) if (dev->of_node) return of_dma_request_slave_channel(dev->of_node, name); + /* If device was enumerated by ACPI get slave info from here */ + if (ACPI_HANDLE(dev)) + return acpi_dma_request_slave_chan_by_name(dev, name); + return NULL; } EXPORT_SYMBOL_GPL(dma_request_slave_channel); |