Jeff Garzik wrote:
qstor's ->host_stop() disables global interrupts, and I didn't know if
you really wanted to do that prior to ->port_stop().
I would much prefer to eliminate the ->host_stop_prewalk() hook, and
simply call ->host_stop after all ->port_stop() calls complete, if qstor
doesn't need the pre-walk.
Ahh.. of course. I must have misread your original.
Yes, sata_qstor generally assumes that host_stop should completely
stop the host from operating.. and thereby expects any port_stop()
calls to happen before host_stop(). So, yup, the changes you have
seem to be useful here.
If we didn't want to have a prewalk() method, then we could hack
sata_qstor to keep a count of active ("non stopped") ports,
and automatically do the global (chip) interrupt disable from
port_stop() whenever the count hits zero.
Cheers
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