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Damien Le Moal
6d81700ad7
The libata command completion for the ATA commands REMOVE ELEMENT AND TRUNCATE and RESTORE ELEMENTS AND REBUILD is handled using the function ata_scsi_depop_ua_cap_changed_complete(). This completion function raises a UNIT ATTENTION with the additional sense code CAPACITY DATA HAS CHANGED. But doing so, the scsi layer seeing the UNIT ATTENTION sense key ends up failing the command, even if the command result is in fact OK. The SAT specifications do provide more details about the capacity change should be notified, and that relies on the ACCESSIBLE CAPACITY field of the IDENTIFY DATA retrieved before or after the command is issued, and then raising a UNIT ATTENTION if the capacity has really changed. However, we do not have any simple mean to raise a unit attention from libata-scsi. So rather than seeing the REMOVE ELEMENT AND TRUNCATE and RESTORE ELEMENTS AND REBUILD commands failing, remove the function ata_scsi_depop_ua_cap_changed_complete() and rely on the regular completion callback. Since for now these commands can only be issued as passthrough commands, the user is responsible for revalidating the device capacity after executing these commands. Fixes:db496721cb("ata: libata-scsi: add support for the REMOVE ELEMENT AND TRUNCATE command") Fixes:1e307ca61a("ata: libata-scsi: add support for the RESTORE ELEMENTS AND REBUILD command") Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20260902020828.1436048-1-dlemoal@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org>
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. 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