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STATUS_GPIO_OPERATION_DENIED
The GPIO handle does not authorize this operation
Peripheral drivers access GPIO I/O resources through logical connections created for pins assigned by Plug and Play. The connection defines direction and permitted use. This status means the requested action is not supported for that handle—for example, writing through a connection configured for input, using an interrupt resource as ordinary I/O, or issuing an operation after disconnection.
Changing the pin at the controller level behind GpioClx can conflict with resource ownership and power management. Diagnostics should begin with the translated GPIO resource, connection mode, IOCTL or callback requested, and handle lifecycle rather than assuming a physical wiring fault.
What to inspect
- Record the GPIO resource descriptor, connection ID, input/output mode, sharing, and requested IOCTL.
- Verify the handle is open and belongs to the same assigned resource and device power state.
- Check whether the pin is reserved for interrupt, function, or firmware use instead of data I/O.
- Use the GpioClx connection interface rather than directly reprogramming pins owned by another client.
References
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: connecting a KMDF driver to GPIO pins
- Microsoft: GpioClx DDI
- Microsoft driver samples: GPIO controllers and clients
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