Re: scsi: fix target reset handling

[Mike Christie <michaelc@cs.wisc.edu>]

Oh yeah, the patches were made over scsi-rc-fixes, but can be applied 
over scsi-misc or 2.6.25-rc3.

michaelc@cs.wisc.edu wrote:
> This patchset fixes the problem where scsi-ml will call the device reset
> handler for each logical unit, but some drivers are sending a target
> reset. Because we do not need to send a target reset multiple times,
> this patchset creates a new target reset callout which of course is
> called once per target instead of once per lu. It also cleans up
> the all the commands sent to the target when SUCCESS is returned.
> 
> qla4xxx, qla2xxx and lpfc were test with a hacked up sg_reset. I also
> sent lots of commands to the target and decreased the cmd timeout to
> 1 second so the scsi would run (turned off the eh abort callout too).
> 
> The arm scsi, mpt fusion, sym53c8xx_2, and a100u2w, and qla1280
> drivers were only compile tested, but looked like the only needed
> a rename of the scsi eh handler.
> 
> The zfcp driver is also only compile tested. It was doing a lun
> reset and possibly target reset, so I split that up to use
> the device and target reset handlers. scsi-ml will escalate from
> the device to the target reset for the driver.
>