linux device driver - How many times same interrupt can be in pending state at a time? (In ARM CM-3) -


could not find answer how many times same interrupt can in pending state @ time? (in arm cm-3) e.g. :

we processing 1 interrupt int_rx, @ same time 3 more packets received. expect 3 times more interrupt appear sequentially. notified 3 times or once or none?

if processor doesn't service isr(interrupt service routine) @ first, there's no way check how many rx interrupts occurred later. seems rx isr doesn't work or there many other int's serviced rx due priority.


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