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Return better error code in case of too long CDB.

Description

Return better error code in case of too long CDB.

Its more important for SPI HBAs, as they don't support CDBs above 12 bytes.
The new error code makes CAM to fall back to alternative commands.

MFC after: 2 weeks

Details

Provenance
mavAuthored on
Parents
rS314301: Fix the acpi idle support on i386 which was broken by r312910.
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