Robert wrote:-Hotplug/hot-unplug fails to work properly, hotplug interrupts not raised (seemingly only on certain boards/configurations as I can't duplicate this problem). http://bugzilla.kernel.org/show_bug.cgi?id=8421I occasionly encountered this problem in one port under certain system,
but didn't see this issue under other systems in the same mainboard.
After adding the operation of manually clearing the added/removed
interrupt bit in NV_INT_STATUS_CK804 register in nv_adma_interrupt function, i saw some improvement.
The key problem is that no one who knows this controller comes to help
to solve these issue.
Given this disadvantage, i think disabling it maybe is a good choice.
I don't know whether we need to continue to provide patch for adma after
disabling adma function.