__SCSI_DEVICE_LOOKUP(9) SCSI mid layer __SCSI_DEVICE_LOOKUP(9)NAME__scsi_device_lookup - find a device given the host (UNLOCKED)
SYNOPSIS
struct scsi_device * __scsi_device_lookup(struct Scsi_Host * shost,
uint channel, uint id,
uint lun);
ARGUMENTS
shost
SCSI host pointer
channel
SCSI channel (zero if only one channel)
id
SCSI target number (physical unit number)
lun
SCSI Logical Unit Number
DESCRIPTION
Looks up the scsi_device with the specified channel, id, lun for a
given host. The returned scsi_device does not have an additional
reference. You must hold the host´s host_lock over this call and any
access to the returned scsi_device.
NOTE
The only reason why drivers would want to use this is because they need
to access the device list in irq context. Otherwise you really want to
use scsi_device_lookup instead.
AUTHORS
James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 __SCSI_DEVICE_LOOKUP(9)