[2.4.4] added the SCSI_IOCTL_GET_PCI ioctl(),
[2.4.7] the "lun" bits (3 bits representing lun values 0 through 7
in the SCSI 1 and SCSI 2 standards) are no longer masked into the second
byte of SCSI commands if the INQUIRY for that devices shows a SCSI level
greater than SCSI_2,
[2.4.7] the max_scsi_luns kernel (and module scsi_mod) option
previously could be 1 to 7. Now the upper value can be large. [The scan
algorithms are still doing a sequential scan rather than using REPORT_LUNS.]
[2.4.7] both scsi_unregister_host() and scsi_unregister_module() now
return an int (previously they were void functions). They return 0 for
success, -1 for failure (typically busy),
[2.4.7] the upper level drivers now report the correct scsi device
name when they are attached. [The log messages that started with
"Detected ..." previously sometimes reported the wrong device (e.g. sdc
rather than sdb).] Kernel boot up messages will now show SCSI devices
as "Attached ...",
[2.4.7] 'max_sectors' was added to the Scsi_Host structure,
[2.4.8] some mid level logic was altered to retry commands if the
sense buffer indicates that logical unit is becoming ready [ASC=4, ASQ=1],
[2.4.9] a major st update,
[2.4.9] mid level changed to retry
commands if lower level (adapter) driver returned DID_RESET,
[2.4.10] original result (including SCSI status) saved when mid level
issues a REQUEST SENSE so it can be restored afterwards,
[2.4.10] added BLKGETSIZE64, BLKBSZSET and BLKBSZGET ioctls to sd + sr,
[2.4.10] sg update that fixes generic_unplug_device() race + bumps
access_count on opens (and decrements on releases),
[2.4.11] added MODULE_LICENSE macro in most drivers, mostly
MODULE_LICENSE("GPL"),
[2.4.11] scsi_pid bumped for each command (why?),
[2.4.11] st update to bump access_count. Now all upper level drivers
increment access_count on opens and decrement it on releases,
[2.4.13] scatterlist structure grows (alt_address is removed, page and
offset added),
[2.4.13] don't probe luns > 7 for target <= SCSI_2 ,
[2.4.14] fine tuning (bug fixes) associated with scatterlist structure
changes [it broke st ?],
[2.4.15] 16 byte SCSI commands permitted [MAX_COMMAND_SIZE changes from
12 to 16]. HBA driver must set Scsi_Host::max_cmd_len to 16 for
mid level to forward 16 byte SCSI commands,
[2.4.15] BLKGETSIZE + BLKGETSIZE64 ioctl() implementations moved out of
SCSI subsystem (and into block subsystem),
[2.4.15] large st update,
[2.4.15] lk 2.5.0 forks off so lk2.4.15==lk2.5.0 .
[2.4.17] add generic_unplug_device() call to scsi_wait_req(). This stops
long waits in SCSI_IOCTL_SEND_COMMAND.
[2.4.17] fix device scanning bug where, in some cases, the scsi_level
(i.e. SCSI standard adherence) was misplaced.
[2.4.17] major sg driver update, add mmap()-ed IO
[2.4.18] permit upper level driver "init()" functions (e.g. sd_init() )
to fail gracefully. [Add Scsi_Device::detected and scsi_unregister_module() .]
[2.4.18] Fix for clustering (SCSI commands) on MO devices.
[2.4.18] st driver update (compression algorithms).
[2.4.18] update Documentation/scsi.txt and scsi-generic.txt .
[2.4.18] Revamp scsi_debug driver .