scsi_test_unit_ready(9)
NAME
scsi_test_unit_ready - test if unit is ready
SYNOPSIS
int scsi_test_unit_ready(struct scsi_device * sdev, int timeout,
int retries,
struct scsi_sense_hdr * sshdr_external);
ARGUMENTS
- sdev
- scsi device to change the state of.
- timeout
- command timeout
- retries
- number of retries before failing
- sshdr_external
- Optional pointer to struct scsi_sense_hdr for returning sense. Make sure that this is cleared before passing in.
DESCRIPTION
Returns zero if unsuccessful or an error if TUR failed. For removable
media, a return of NOT_READY or UNIT_ATTENTION is translated to
success, with the ->changed flag updated.
AUTHORS
- James Bottomley <James.Bottomley@hansenpartnership.com>
- Author.
- Rob Landley <rob@landley.net>
- Author.