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    Subject[PATCH 5.14 151/169] scsi: mpi3mr: Fix duplicate device entries when scanning through sysfs
    Date
    From: Sreekanth Reddy <sreekanth.reddy@broadcom.com>

    [ Upstream commit 97e6ea6d78064e7f1e9e19c45dc690aabbb71297 ]

    When scanning devices through the 'scan' attribute in sysfs, the user will
    observe duplicate device entries in lsscsi command output.

    Set the shost's max_channel to zero to avoid this.

    Link: https://lore.kernel.org/r/20211014055425.30719-1-sreekanth.reddy@broadcom.com
    Fixes: 824a156633df ("scsi: mpi3mr: Base driver code")
    Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/mpi3mr/mpi3mr_os.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
    index 24ac7ddec749..206c2598ade3 100644
    --- a/drivers/scsi/mpi3mr/mpi3mr_os.c
    +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
    @@ -3755,7 +3755,7 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
    shost->max_lun = -1;
    shost->unique_id = mrioc->id;

    - shost->max_channel = 1;
    + shost->max_channel = 0;
    shost->max_id = 0xFFFFFFFF;

    if (prot_mask >= 0)
    --
    2.33.0


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