unabalanced enable for irq 7
 

HI ....i m new in device driver programming..,..
i have written my own parallel port driver along with interrupt request....Before insert my module i removed lp,parallelport_pc from list of modules .....now while inserting module i m able to insert module in kernel...but while giving dmesg command it is showing this error:

unabalanced enable for irq 7

So somebody can help me to solve that error....