The following patches were made over Martin's 6.2 scsi staging branch and add a struct that contains optinal arguments to the scsi_execute* functions. This will be needed for the patches that allow the scsi passthrough users to control retries because I'm adding a new optional argument. I separated the 2 sets to make it easier to review and post. v2: - Fix RQF_QUIET use. - Use the more standard way of passing in a struct for passing in the scsi_exec_args struct. - Pass a struct scsi_exec_args instead of pointer and add another macro for the case the caller doesn't want to pass in a scsi_exec_args struct. Then remove the NULL args check in __scsi_execute.
