other versions
- wheezy 3.2.78-1
__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¶
shostSCSI 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.
COPYRIGHT¶
March 2016 | Kernel Hackers Manual 3.2. |