porting pci driverfrom arch=ppc on kernel 2.6.16 to arch=powerpc on 2.6.24...

[Mike Timmons]

Scott,
Thanks for the quick answer. I did try this. I successfully get the
interrupt (virq=16) but it then fires continuously, immedetely following
the request_irq call.

My old ppc driver calls request_irq with flags SA_SHIRQ | SA_INTERRUPT
(0x20000000 | 0x04000000 ). I can't find equivalencies in the new
powerpc 2.6.24 kernel.

The only flag I'm passing to request_irq under the new 2.6.24 is
IRQF_SHARED.

I'm wondering if some interrupt type setting is mucked up, hence the
continuous interrupts. I only expect to receive this interrupt in
response to an error on my coralP, so I shouldn't see the interrupt at
all immediately following the interrupt request.

Any ideas? Thanks again,

Mike


-----Original Message-----
From: Scott Wood [mailto:scottwood at freescale.com] 
Sent: Tuesday, May 06, 2008 1:12 PM
To: Mike Timmons
Cc: linuxppc-embedded at ozlabs.org
Subject: Re: porting pci driverfrom arch=ppc on kernel 2.6.16 to
arch=powerpc on 2.6.24...

Mike Timmons wrote:
> pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &irqnum).

Don't do this; use pci_dev->irq instead.

If that value doesn't work, check your interrupt-map in the pci node of 
the device tree.

-Scott