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xf86: allow DDX driver for GPU/PCI hot-plug

Shashank Sharma requested to merge contactshashanksharma/xserver-fork-shashank:push-pci-hotplug into master

The current X server infrastructure sets modesetting driver as default driver to handle PCI-hotplug of a GPU device. This prevents the respective DDX driver (like AMDGPU DDX driver) to take control of the card.

This patch:

  • fine-tunes the PCI-hotplug infrastructure to allow the respective DDX driver to be loaded.
  • scans and updates the PCI device list before adding the new GPU device in platform, so that the association of the platform device and PCI device is in place (dev->pdev).

Cc: Alex Deucher alexandar.deucher@amd.com

Reviewed-by: Adam Jackson ajax@redhat.com Acked-by: Alex Deucher alexander.deucher@amd.com Acked-by: Martin Roukala martin.roukala@mupuf.org Signed-off-by: Shashank Sharma shashank.sharma@amd.com

Edited by Shashank Sharma

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