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SubjectRe: MSI interrupts and disable_irq
On 10/14/07, Manfred Spraul <manfred@colorfullife.com> wrote:
> Yinghai Lu wrote:
> > On 10/13/07, Manfred Spraul <manfred@colorfullife.com> wrote:
> >
> >> Someone around with a MSI capable board? The forcedeth driver does
> >> dev->irq = pci_dev->irq
> >> in nv_probe(), especially before pci_enable_msi().
> >> Does pci_enable_msi() change pci_dev->irq? Then we would disable the
> >> wrong interrupt....
> >>
> >
> > the request_irq==>setup_irq will make dev->irq = pci_dev->irq.
> >
> >
> Where is that?

in nv_request_irq
if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
np->msi_flags |= NV_MSI_ENABLED;
if (request_irq(np->pci_dev->irq, handler,
IRQF_SHARED, dev->name, dev) != 0) {
in request_irq

int request_irq(unsigned int irq, irq_handler_t handler,
unsigned long irqflags, const char *devname, void *dev_id)
...
action->dev_id = dev_id;
...
retval = setup_irq(irq, action);

in setup_irq
int setup_irq(unsigned int irq, struct irqaction *new)
....
new->irq = irq;
it seems I missed that here new is irqaction instead of net_dev.

YH
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