Methods and systems for a device interfacing with a computing system are provided. The device is configured to send an input/output status block (IOSB) and an interrupt message to the processor of a computing system interfacing upon completion of an operation. The device generates the interrupt message while the IOSB is waiting to be transmitted; and transmits the IOSB to the processor, followed by the interrupt message, using a same data path for both the IOSB and the interrupt message. Furthermore, the device is configured to detect a request from the processor of the computing system interfacing to clear an interrupt status maintained by the device at a hardware location; send a message to the processor to de-assert the interrupt status and in parallel, clear the hardware location to clear the interrupt status such that the computing system can transfer information to the device for a next operation.