static irqreturn_t ems_104m_interrupt(int irq, void *dev_id)
#endif
{
struct ems_104m_card *card = dev_id;
struct net_device *dev;
irqreturn_t retval = IRQ_NONE;
int i, again;
do {
again = 0;
/* Check interrupt for each channel */
for (i = 0; i < EMS_104M_MAX_CHAN; i++) {
dev = card->net_dev[i];
if (!dev)
continue;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
if (sja1000_interrupt(irq, dev, regs) == IRQ_HANDLED)
again = 1;
#else
if (sja1000_interrupt(irq, dev) == IRQ_HANDLED)
again = 1;
#endif
}
/* At least one channel handled the interrupt */
if (again)
retval = IRQ_HANDLED;
} while (again);
return retval;
}
static irqreturn_t pcan_isr(int irq, void *dev_id)
{
struct pcan_pccard *card = dev_id;
int irq_handled;
for (irq_handled = 0; irq_handled < PCC_ISR_MAX_LOOP; irq_handled++) {
int nothing_to_handle = 1;
int i;
for (i = 0; i < card->chan_count; i++) {
struct net_device *netdev;
if (!pcan_pccard_present(card)) {
return IRQ_NONE;
}
netdev = card->channel[i].netdev;
if (netdev &&
sja1000_interrupt(irq, netdev) == IRQ_HANDLED)
nothing_to_handle = 0;
}
if (nothing_to_handle)
break;
}
return (irq_handled) ? IRQ_HANDLED : IRQ_NONE;
}
static irqreturn_t ems_pcmcia_interrupt(int irq, void *dev_id)
{
struct ems_pcmcia_card *card = dev_id;
struct net_device *dev;
irqreturn_t retval = IRQ_NONE;
int i, again;
/* */
if (readw(card->base_addr) != 0xAA55)
return IRQ_HANDLED;
do {
again = 0;
/* */
for (i = 0; i < card->channels; i++) {
dev = card->net_dev[i];
if (!dev)
continue;
if (sja1000_interrupt(irq, dev) == IRQ_HANDLED)
again = 1;
}
/* */
if (again)
retval = IRQ_HANDLED;
} while (again);
return retval;
}
/*
* interrupt service routine
*/
static irqreturn_t pcan_isr(int irq, void *dev_id)
{
struct pcan_pccard *card = dev_id;
int irq_handled;
/* prevent from infinite loop */
for (irq_handled = 0; irq_handled < PCC_ISR_MAX_LOOP; irq_handled++) {
/* handle shared interrupt and next loop */
int nothing_to_handle = 1;
int i;
/* check interrupt for each channel */
for (i = 0; i < card->chan_count; i++) {
struct net_device *netdev;
/*
* check whether the card is present before calling
* sja1000_interrupt() to speed up hotplug detection
*/
if (!pcan_pccard_present(card)) {
/* card unplugged during isr */
return IRQ_NONE;
}
/*
* should check whether all or SJA1000_MAX_IRQ
* interrupts have been handled: loop again to be sure.
*/
netdev = card->channel[i].netdev;
if (netdev &&
sja1000_interrupt(irq, netdev) == IRQ_HANDLED)
nothing_to_handle = 0;
}
if (nothing_to_handle)
break;
}
return (irq_handled) ? IRQ_HANDLED : IRQ_NONE;
}
