Discussion
None of the following belongs in an interrupt handler in a driver except
Answer: C
Correct answer: clearing the device's interrupt flag
Acknowledging the device is exactly what a handler must do, and doing it promptly stops the interrupt reasserting. The other three all take an unbounded or long time - waiting on a bus, writing to a console, allocating memory - and any of them in a handler risks missing the next interrupt or hanging outright.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development