Re: [PATCH] libata: fix use-after-free during driver unload/unplug

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Hi Jeff!

Jeff Garzik wrote:

* add ->host_stop_prewalk() hook, use it in sata_qstor.c (hi Mark). sata_qstor appears to require the host-stop-before-port-stop ordering that existed prior to applying the attached patch.

Mmm.. I'm a little bit rusty here, but I don't think qstor
cares about the order, so long as ports are marked with
ATA_FLAG_PORT_DISABLED before invoking port_stop().

I've tried to allow disabling/enabling individual ports
on-the-fly as needed, even though it never really happens
in practice.  So host_stop() kills the whole chip, whereas
port_stop() I took to mean just one of the four SATA ports.

Cheers
--
Mark Lord
Real-Time Remedies Inc.
[email protected]

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