[PATCH v2] scsi: Adjust SCSI inquiry command data length

Marek Vasut marek.vasut at mailbox.org
Thu Mar 5 14:57:26 CET 2026


On 3/5/26 11:23 AM, Macpaul Lin wrote:
> Per the SCSI SPC-4 specification, the standard inquiry data length
> should not be less than 36 bytes. The current implementation uses 512
> bytes, which causes detection failures on some UFS devices (e.g.,
> Longsys) that do not expect a transfer length exceeding the standard
> inquiry size.
> 
> Align the default standard inquiry length with the Linux kernel's
> implementation (see drivers/scsi/scsi_scan.c), which uses 36 bytes as
> the default. Devices requiring vendor-specific inquiry lengths should
> be handled through quirk settings in the future.
Reviewed-by: Marek Vasut <marek.vasut at mailbox.org>

Thank you !


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