Missing some interrupts

[wael showair]

Hi All,
i have a freescale board, that contains MPC8555 processor & DSP-core
there is a GPIO connecting the DSP-core into an input pin of the OpenPIC of
the MPC8555 processor.

i test one interrupt from the DSP-core to the MPC8555 processor where i
configure this interrupt line to be edge-triggered (falling edge) & i
receive it successfully 
but 
when i generate this interrupt 10 successive times using for loop
i just receive 2 interrupts?

why can't i receive the 8 other interrupts?
i print the value of every irq number inside do_IRQ & i found that i receive
the DSP-interrupt just only twice.

do u have any suggestions to solve this problem?
i want to make sure that i can receive 10 interrupts
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