On Fri, 15 Sep 2023 11:20:34 +0900, Damien Le Moal wrote:
> Some old drives (e.g. an Ultra320 SCSI disk as reported by John) do not
> seem to execute MAINTENANCE_IN / MI_REPORT_SUPPORTED_OPERATION_CODES
> commands correctly and hang when a non-zero service action is specified
> (one command format with service action case in scsi_report_opcode()).
>
> Currently, CDL probing with scsi_cdl_check_cmd() is the only caller
> using a non zero service action for scsi_report_opcode(). To avoid
> issues with these old drives, do not attempt CDL probe if the device
> reports support for an SPC version lower than 5 (CDL was introduced in
> SPC-5). To keep things working with ATA devices which probe for the CDL
> T2A and T2B pages introduced with SPC-6, modify ata_scsiop_inq_std() to
> claim SPC-6 version compatibility for ATA drives supporting CDL.
>
> [...]
Applied to 6.6/scsi-fixes, thanks!
[1/1] scsi: Do no try to probe for CDL on old drives
https://git.kernel.org/mkp/scsi/c/2132df16f53b
--
Martin K. Petersen Oracle Linux Engineering
