Jeff Garzik wrote:
Tejun Heo wrote:
Implement unload unplug - driver unloading / PCI removal via hot
unplug path. This is done by ata_port_detach() which requests detach
of all devices, schedules EH and wait for it to complete. EH path is
slightly modified to handle this (e.g. force zero eh_info during
unloading). With this patch, EH and unloading are properly
synchronized and unloading should be safe under any circumstances.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
How does this behave for controller hotplug? For that case, there is
nothing to EH...
I've only tested with module unloading but when EH is invoked for
unplugging, autopsy and report are skipped and recover is called with
zero ehi but with all DFLAG_DETACH set. This amounts to unconditional
detachment of all devices without any other operation (well, of course,
other than being synchronized to other EH invocations). So, I guess it
should work okay. Can you tell me how to test such condition? I guess
I can yank out my sil3132 and unload sata_sil24. Would that be enough?
--
tejun
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