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Message-Id: <20231127124529.78203-10-manivannan.sadhasivam@linaro.org>
Date: Mon, 27 Nov 2023 18:15:29 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: lpieralisi@...nel.org, kw@...ux.com
Cc: kishon@...nel.org, bhelgaas@...gle.com, mhi@...ts.linux.dev,
linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
linux-kernel@...r.kernel.org,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 9/9] bus: mhi: ep: Add checks for read/write callbacks while registering controllers
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@...aro.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
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