[PATCH 9/9] bus: mhi: ep: Add checks for read/write callbacks while registering controllers

Manivannan Sadhasivam
2023-11-27T12:47:21Z

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@linaro.org>
---
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