|__SCSI_DEVICE_LOOKUP(9)||SCSI mid layer||__SCSI_DEVICE_LOOKUP(9)|
__scsi_device_lookup - find a device given the host (UNLOCKED)
struct scsi_device * __scsi_device_lookup(struct Scsi_Host * shost, uint channel, uint id, u64 lun);
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.
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.
James Bottomley <James.Bottomley@hansenpartnership.com>
Rob Landley <email@example.com>
|January 2017||Kernel Hackers Manual 4.8.|