| __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.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |