[PATCH] libata: fix revalidation issuing after configuration commands

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Hi,

The patch works fine! Reset happens only once per disk and works also
when disks are missing, which would result in infinite loop before.
Setting the parameters of a hard-drive works too.

The only thing that is puzzling to me is that I am unable to send more
than 80MB/s through one Express-Card sata port. I am not sure what the
problem is, the bus ought to sustain 300MB/s without the problem, is
this PM limitation (does not seem so from the PR material), or the
sata card? This makes it impossible to create high-speed RAID.

Regards, Igor

Tejun Heo writes:
> After commands which can change device configuration, EH is scheduled
> to revalidate and reconfigure the device.  Host link was incorrectly
> used unconditionally when scheduling EH action.  This resulted in
> bogus revalidation request and mismatched configuration between device
> and driver.  Fix it.
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