when the eh_strategy_handler function gets invoked

[Madhavi Manchala <madhavi.lscsi@xxxxxxxxx>]

Dear All,

I'm developing a USB class driver for UAS device. I have modified the
storage driver code as per my custom driver requirements. As a part of
this, I have registered to the SCSI layer through following snippet in
the storage_probe function. I have seen the code in one of the SAS
driver's implementation.

/*
 * Attach transport template to SCSI layer
 * which shall be used for executing tasks and
 * task management functions.
 */
transport_template = domain_attach_transport(&transport_functions);
if (!transport_template)
       goto BadDevice;
	
struct scsi_transport_template *
domain_attach_transport(struct domain_function_template *dft)
{
       struct scsi_transport_template *stt = attach_transport();

       if (!stt)
               return stt;

       i = to_uas_internal(stt);
       i->dft = dft;
       stt->create_work_queue = 1;
       stt->eh_timed_out = uas_scsi_timed_out;
       stt->eh_strategy_handler = uas_scsi_recover_host;

       return stt;
}

I would like to know when the eh_strategy_handler
(uas_scsi_recover_host) function gets invoked.

When I canceled the read/write operation from/to host to the device or
vice-versa. Still, the function, eh_strategy_handler
(uas_scsi_recover_host), is not invoked.

Thanks and Regards,
Madhavi M
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