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The REPORT_SUPPORTED_OPERATION_CODES command allows checking for support of commands that have the same opcode but different service actions, such as READ 32 and WRITE 32. However, the current implementation of scsi_report_opcode() only allows checking an operation code without a service action differentiation. Add the "sa" argument to scsi_report_opcode() to allow passing a service action. If a non-zero service action is specified, the reporting options field value is set to 3 to have the service action field taken into account by the device. If no service action field is specified (zero), the reporting options field is set to 1 as before. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Link: https://lore.kernel.org/r/20230511011356.227789-8-nks@flawful.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>