The MHI EP controller drivers has to support both sync and async read/write callbacks. Hence, add a check for it. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> --- drivers/bus/mhi/ep/main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c index 3e599d9640f5..6b84aeeb247a 100644 --- a/drivers/bus/mhi/ep/main.c +++ b/drivers/bus/mhi/ep/main.c @@ -1471,6 +1471,10 @@ int mhi_ep_register_controller(struct mhi_ep_cntrl *mhi_cntrl, if (!mhi_cntrl || !mhi_cntrl->cntrl_dev || !mhi_cntrl->mmio || !mhi_cntrl->irq) return -EINVAL; + if (!mhi_cntrl->read_sync || !mhi_cntrl->write_sync || + !mhi_cntrl->read_async || !mhi_cntrl->write_async) + return -EINVAL; + ret = mhi_ep_chan_init(mhi_cntrl, config); if (ret) return ret; -- 2.25.1
