Re: how I know if a interrupt is ioapic_edge_type or ioapic_level_type? [Was Re: [Fwd: Re: [Linux-usb-users] Fwd: Re: 2.6.17-rc6-mm2 - USB issues]]

[Sergio Monteiro Basto <sergio@sergiomb.no-ip.org>]

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On Thu, 2006-06-22 at 14:29 -0700, Randy.Dunlap wrote:
> On Thu, 22 Jun 2006 12:56:25 +0100 Sergio Monteiro Basto wrote:
> 
> > On Wed, 2006-06-21 at 21:08 -0700, Randy.Dunlap wrote:
> > > 
> > > If you have a specific issue/problem, it would probably be
> > > better just to focus on that. 
> > 
> > on linux-2.6.17/drivers/pci/quirks.c	
> > 
> >   * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
> >   * interrupts delivered properly.
> >   */
> > 
> >  static void quirk_via_irq(struct pci_dev *dev)
> >  {
> >  	u8 irq, new_irq;
> > 
> > I want here put something like:  if ( dev->irq != XT-PIC) return and don't quirk this dev.
> >  	else 
> 
> I don't think the interrupt device mode is known by this code (AFAICT
> with a quick look).  The function is only called for certain VIA chipsets.
> 
> Do you want the quirk for any particular hardware device?
> You might be able to look at the function's <dev> parameter
> to decide on using the quirk or not.
> 
> 
> > 	new_irq = dev->irq & 0xf;
> >  	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);

yap, in my opinion this function should back to 

--- orig/drivers/pci/quirks.c	2006-06-21 20:25:41.000000000 +1000
+++ linux-2.6.17-rc6-mm2/drivers/pci/quirks.c	2006-06-21 20:25:08.000000000 +1000
@@ -662,13 +662,7 @@
 		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
 	}
 }
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_irq);
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, quirk_via_irq);
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
 
 /*
  * VIA VT82C598 has its device ID settable and many BIOSes


But do you know or not ? how I know if dev->irq is XT-pic ? 


-- 
Sérgio M. B.

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