/*
* @implemented
*/
-
-VP_STATUS NTAPI
+VP_STATUS
+NTAPI
VideoPortEnableInterrupt(IN PVOID HwDeviceExtension)
{
- PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
- BOOLEAN Status;
+ PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
+ BOOLEAN InterruptValid;
+
+ /* Get the device extension */
+ DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
- TRACE_(VIDEOPRT, "VideoPortEnableInterrupt\n");
+ /* Fail if the driver didn't register an ISR */
+ if (!DeviceExtension->DriverExtension->InitializationData.HwInterrupt)
+ {
+ /* No ISR, no interrupts */
+ return ERROR_INVALID_FUNCTION;
+ }
- DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
+ /* Re-enable the interrupt and return */
+ InterruptValid = HalEnableSystemInterrupt(DeviceExtension->InterruptVector,
+ 0,
+ DeviceExtension->InterruptLevel);
- Status = HalEnableSystemInterrupt(
- DeviceExtension->InterruptVector,
- 0,
- DeviceExtension->InterruptLevel);
+ /* Make sure the interrupt was valid */
+ ASSERT(InterruptValid == TRUE);
- return Status ? NO_ERROR : ERROR_INVALID_PARAMETER;
+ /* Return to caller */
+ return NO_ERROR;
}
/*
* @implemented
*/
-
-VP_STATUS NTAPI
+VP_STATUS
+NTAPI
VideoPortDisableInterrupt(IN PVOID HwDeviceExtension)
{
- PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
- BOOLEAN Status;
-
- TRACE_(VIDEOPRT, "VideoPortDisableInterrupt\n");
-
- DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
-
- Status = HalDisableSystemInterrupt(
- DeviceExtension->InterruptVector,
- 0);
-
- return Status ? NO_ERROR : ERROR_INVALID_PARAMETER;
+ PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
+
+ /* Get the device extension */
+ DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
+
+ /* Fail if the driver didn't register an ISR */
+ if (!DeviceExtension->DriverExtension->InitializationData.HwInterrupt)
+ {
+ /* No ISR, no interrupts */
+ return ERROR_INVALID_FUNCTION;
+ }
+
+ /* Disable the interrupt and return */
+ HalDisableSystemInterrupt(DeviceExtension->InterruptVector,
+ 0);
+ return NO_ERROR;
}