diff options
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 3aa76dbed16..be6e95395b1 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -608,7 +608,10 @@ static inline int dmaengine_device_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned long arg) { - return chan->device->device_control(chan, cmd, arg); + if (chan->device->device_control) + return chan->device->device_control(chan, cmd, arg); + else + return -ENOSYS; } static inline int dmaengine_slave_config(struct dma_chan *chan, |