Hi,
We are testing Intel Gigabit adapter driver (igb) under Fedora 20, kernel 3.14.4 for the following use-case:
(*) Adapter is connected to the PCIE slot
(*) We put the system under suspend by running pm-suspend from user-space
(*) Remove the adapter from the PCIE slot
(*) Wake up the system
Currently, we got kernel panics and the system gets stuck.
My questions are -
1) in order to support hot-unplugging in igb driver, should I implement the check of device presence in igb_resume
function?
2) After the system wakes up, I see in dmesg that the PCI device function igb refuses to change power state and remains in PCI power state D3.
can I assume that after suspend-resume if the function remains in D3 and refuses to move to D1 then hot-unplug event has occured?
Thanks and BR,
Igor Bezukh
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