static void
diva_irq_ipacx_pci(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char val;
u_char *cfg;
if (!cs) {
printk(KERN_WARNING "Diva: Spurious interrupt!\n");
return;
}
cfg = (u_char *) cs->hw.diva.pci_cfg;
val = *cfg;
if (!(val &PITA_INT0_STATUS)) return; // other shared IRQ
interrupt_ipacx(cs); // handler for chip
*cfg = PITA_INT0_STATUS; // Reset PLX interrupt
}
static irqreturn_t
diva_irq_ipacx_pci(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val;
u_char *cfg;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
cfg = (u_char *) cs->hw.diva.pci_cfg;
val = *cfg;
if (!(val & PITA_INT0_STATUS)) {
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_NONE; // other shared IRQ
}
interrupt_ipacx(cs); // handler for chip
*cfg = PITA_INT0_STATUS; // Reset PLX interrupt
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
