int msnd_enable_irq(multisound_dev_t *dev) { unsigned long flags; if (dev->irq_ref++) return 0; printk(KERN_DEBUG LOGNAME ": Enabling IRQ\n"); spin_lock_irqsave(&dev->lock, flags); if (msnd_wait_TXDE(dev) == 0) { outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR); if (dev->type == msndClassic) outb(dev->irqid, dev->io + HP_IRQM); outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR); outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR); enable_irq(dev->irq); msnd_init_queue(dev->DSPQ, dev->dspq_data_buff, dev->dspq_buff_size); spin_unlock_irqrestore(&dev->lock, flags); return 0; } spin_unlock_irqrestore(&dev->lock, flags); printk(KERN_DEBUG LOGNAME ": Enable IRQ failed\n"); return -EIO; }
int msnd_enable_irq(multisound_dev_t *dev) { unsigned long flags; if (dev->irq_ref++) return 0; ; spin_lock_irqsave(&dev->lock, flags); if (msnd_wait_TXDE(dev) == 0) { msnd_outb(msnd_inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR); if (dev->type == msndClassic) msnd_outb(dev->irqid, dev->io + HP_IRQM); msnd_outb(msnd_inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR); msnd_outb(msnd_inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR); enable_irq(dev->irq); msnd_init_queue(dev->DSPQ, dev->dspq_data_buff, dev->dspq_buff_size); spin_unlock_irqrestore(&dev->lock, flags); return 0; } spin_unlock_irqrestore(&dev->lock, flags); ; return -EIO; }