c - How to solve "BUG: scheduling while atomic: swapper /0x00000103/0, CPU#0"? in TSC2007 Driver?

Question

I found tsc2007 driver and modified according to our needs. Our firm is producing its own TI DM365 board. In this board we used TSC2007 and connected PENIRQ pin to GPIO0 of DM365. It is being seen OK on driver. when i touch to touchscreen cursor is moving but at the same time i am getting

BUG: scheduling while atomic: swapper /0x00000103/0, CPU#0

warning and embedded Linux is being crashed. there are 2 files that i modified and uploaded to http://www.muhendislikhizmeti.com/touchscreen.zip one is with timer the other is not. it is giving this error in any case.

I found a solution on web that i need to use work queue and call with using schedule_work() API. but they are blur for me now. Is anybody have any idea how to solve this problem and can give me some advice where to start to use work queue.

Answer 1

"Scheduling while atomic" indicates that you've tried to sleep somewhere that you shouldn't - like within a spinlock-protected critical section or an interrupt handler.

Common examples of things that can sleep are mutex_lock(), kmalloc(..., GFP_KERNEL), get_user() and put_user().