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    Subject[PATCH AUTOSEL 4.19 208/237] scsi: mpt3sas: Don't modify EEDPTagMode field setting on SAS3.5 HBA devices
    Date
    From: Suganath Prabu <suganath-prabu.subramani@broadcom.com>

    [ Upstream commit 6cd1bc7b9b5075d395ba0120923903873fc7ea0e ]

    If EEDPTagMode field in manufacturing page11 is set then unset it. This is
    needed to fix a hardware bug only in SAS3/SAS2 cards. So, skipping
    EEDPTagMode changes in Manufacturing page11 for SAS 3.5 controllers.

    Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
    Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
    Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/mpt3sas/mpt3sas_base.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
    index d2ab52026014f..2c556c7fcf0dc 100644
    --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
    +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
    @@ -4117,7 +4117,7 @@ _base_static_config_pages(struct MPT3SAS_ADAPTER *ioc)
    * flag unset in NVDATA.
    */
    mpt3sas_config_get_manufacturing_pg11(ioc, &mpi_reply, &ioc->manu_pg11);
    - if (ioc->manu_pg11.EEDPTagMode == 0) {
    + if (!ioc->is_gen35_ioc && ioc->manu_pg11.EEDPTagMode == 0) {
    pr_err("%s: overriding NVDATA EEDPTagMode setting\n",
    ioc->name);
    ioc->manu_pg11.EEDPTagMode &= ~0x3;
    --
    2.20.1
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