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Re: [Bug 681207] Re: PCI device header type doesn't include bit7

 

On Thu, Dec 02, 2010 at 03:34:40AM -0000, Chih-Pin Wu wrote:
> Thanks, Bryce.
> 
> About the bridge.pci pointer, as it stands the function will not go pass
> that pointer checking and always return with ENODEV. You see priv is a
> local variable (structure) and only its first member "base", which is a
> pci_device structure, gets filled in with valid data from caller by type
> casting (from pci_device* to pci_device_priv). The union member
> "bridge", which is a pointer, is not part of the pci_device structure.
> As such, the value will be null every time the function is called. So
> without fixing this pointer checking thing, the code below it will never
> get executed.

Ah, thanks for the added explanation, yes that makes sense.

The reason I left that bit out of the patch I sent upstream is because
there was a specific commit that added it:

http://cgit.freedesktop.org/xorg/lib/libpciaccess/commit/?id=2bda5b733bb12854760750c08138db95e77aea0c

So it's a conceptually distinct change and I figure upstream will prefer
to consider that separate from the bit mask change.  Also, because it
looks like that change would best be implemented upstream via a revert.

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https://bugs.launchpad.net/bugs/681207

Title:
  PCI device header type doesn't include bit7



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