<title>Interrupt Handling</title>
<para>
Our example handler is for an ISA bus device. If it was PCI you would be
- able to share the interrupt and would have set SA_SHIRQ to indicate a
+ able to share the interrupt and would have set IRQF_SHARED to indicate a
shared IRQ. We pass the device pointer as the interrupt routine argument. We
don't need to since we only support one card but doing this will make it
easier to upgrade the driver for multiple devices in the future.
Use these for address resources that are not described by "normal" PCI
interfaces (e.g. BAR).
- All interrupt handlers should be registered with SA_SHIRQ and use the devid
+ All interrupt handlers should be registered with IRQF_SHARED and use the devid
to map IRQs to devices (remember that all PCI interrupts are shared).
If you want to share the IRQ with another device and the driver refuses to
do so, you might succeed with changing the DC390_IRQ type in tmscsim.c to
-SA_SHIRQ | SA_INTERRUPT.
+IRQF_SHARED | IRQF_DISABLED.
3.Features
}
chip->port = pci_resource_start(pci, 0);
if (request_irq(pci->irq, snd_mychip_interrupt,
- SA_INTERRUPT|SA_SHIRQ, "My Chip", chip)) {
+ IRQF_DISABLED|IRQF_SHARED, "My Chip", chip)) {
printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
snd_mychip_free(chip);
return -EBUSY;
<programlisting>
<![CDATA[
if (request_irq(pci->irq, snd_mychip_interrupt,
- SA_INTERRUPT|SA_SHIRQ, "My Chip", chip)) {
+ IRQF_DISABLED|IRQF_SHARED, "My Chip", chip)) {
printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
snd_mychip_free(chip);
return -EBUSY;
<para>
On the PCI bus, the interrupts can be shared. Thus,
- <constant>SA_SHIRQ</constant> is given as the interrupt flag of
+ <constant>IRQF_SHARED</constant> is given as the interrupt flag of
<function>request_irq()</function>.
</para>