pci_enable_device for pciaccess?

[Ian Romanick]

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Dave Airlie wrote:
| Okay I've been playing with getting posting working again in master,
|
| I can make it work on Linux if I use the OS to enable the device in
| /sys before trying to POST it.
|
| However I really think this should be pciaccess functionality, so I'd
| like to add a pci_enable_device function to libpciaccess and call it
| from the server before trying to POST secondary cards.
|
| Long term the posting should be done before X starts but I want to fix
| the regression for Fedora.
|
| the other option is to haxor the int10 module to do this on Linux, but
| I'd rather expand pciaccess.

Adding this functionality to libpciaccess is the right thing to do.
When enabling a device, to the buses leading to the device also have to
be enabled?  I was thinking about adding some functionality to iterate
from the root to a particular device.  This would facilitate enabling
the buses leading to the device and enabling VGA to a device.

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