Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug

NAME
       z8530_interrupt - Handle an interrupt from a Z8530


SYNOPSIS
       irqreturn_t z8530_interrupt  (int irq, void * dev_id,
                                      struct pt_regs * regs);


ARGUMENTS
       irq    Interrupt number

       dev_id The Z8530 device that is interrupting.

       regs   unused


DESCRIPTION
       A Z85[2]30 device has stuck its hand in the air for attention. We  scan
       both  the  channels  on  the  chip for events and then call the channel
       specific call backs for each channel that has events. We  have  to  use
       callback  functions because the two channels can be in different modes.

       Locking is done for the handlers. Note that locking is done at the chip
       level  (the  5uS  delay issue is per chip not per channel). c->lock for
       both channels points to dev->lock