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authorGavin Shan <[email protected]>2017-01-11 11:50:08 +1100
committerMichael Ellerman <[email protected]>2017-02-15 20:02:43 +1100
commit454593e54cac126a0f49d4b65f90a5e518c51404 (patch)
treefad75e4dfb75619ec384dafc0968919e830c266b /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
parentd0c424971f70501ec0a0364117b9934db039c9cc (diff)
drivers/pci/hotplug: Mask PDC interrupt if required
We're supporting surprise hotplug on PCI slots behind root port or PCIe switch downstream ports, which don't claim the capability in hardware register (offset: PCIe cap + PCI_EXP_SLTCAP). PEX8718 is one of the examples. For those PCI slots, the PDC (Presence Detection Change) event isn't reliable and the underly (skiboot) firmware has best judgement. This masks the PDC event when skiboot requests by "ibm,slot-broken-pdc" property in PCI slot's device-tree node. Reported-by: Hank Chang <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Tested-by: Willie Liauw <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions