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    SubjectRe: [PATCH 05/16] scsi: libsas: Add struct sas_tmf_task
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    On 25/01/2022 13:37, Matthew Wilcox wrote:
    >> Also add an interim force phy id field for hisi_sas driver, which will be
    >> removed once the STP "TMF" code is factored out.
    >>
    >> Even though some LLDDs (pm8001) use a u32 for the tag, u16 should be
    >> enough.
    > ... because pm8001 limits the number of tags to 1024.
    > .

    Sure, but the pm8001 HW does has a 32b field, which is strange as the
    SAS spec defines a 16b field in the task management Function information
    unit "tag of task to be managed" field.

    Thanks,
    John

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