SCSI_INTERNAL_DEVICE(9)                   SCSI mid layer                  SCSI_INTERNAL_DEVICE(9)



NAME
       scsi_internal_device_block - internal function to put a device temporarily into the
       SDEV_BLOCK state

SYNOPSIS
       int scsi_internal_device_block(struct scsi_device * sdev);

ARGUMENTS
       sdev
           device to block

DESCRIPTION
       Block request made by scsi lld's to temporarily stop all scsi commands on the specified
       device. Called from interrupt or normal process context.

       Returns zero if successful or error if not

NOTES
       This routine transitions the device to the SDEV_BLOCK state (which must be a legal
       transition). When the device is in this state, all commands are deferred until the scsi
       lld reenables the device with scsi_device_unblock or device_block_tmo fires.

AUTHORS
       James Bottomley <James.Bottomley AT hansenpartnership.com>
           Author.

       Rob Landley <rob AT landley.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   SCSI_INTERNAL_DEVICE(9)