tree 4be0f09620503f6669a40dacd49326443c9c07dc
parent 55db6c1b8ed52bfc876e87971de8c67c42f36909
author Boaz Harrosh <bharrosh@panasas.com> 1191854205 +0200
committer James Bottomley <jejb@mulgrave.localdomain> 1192215298 -0400

[SCSI] scsi_error: Refactoring scsi_error to facilitate in synchronous REQUEST_SENSE

 - Drivers/transports that want to send a synchronous REQUEST_SENSE command
   as part of their .queuecommand sequence, have 2 new API's that facilitate
   in doing so and abstract them from scsi-ml internals.

   void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
	struct scsi_eh_save *sesci, unsigned char *cmnd,
	int cmnd_size, int sense_bytes)

   Will hijack a command and prepare it for request sense if needed.
   And will save any later needed info into a scsi_eh_save structure.

   void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
	struct scsi_eh_save *sesci);

   Will undo any changes done to a command by above function. Making
   it ready for completion.

 - Re-factor scsi_send_eh_cmnd() to use above APIs

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>