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    Subject[PATCH 5.12 037/292] scsi: arcmsr: Fix the wrong CDB payload report to IOP
    Date
    From: ching Huang <ching2048@areca.com.tw>

    [ Upstream commit 5b8644968d2ca85abb785e83efec36934974b0c2 ]

    This patch fixes the wrong CDB payload report to IOP.

    Link: https://lore.kernel.org/r/d2c97df3c817595c6faf582839316209022f70da.camel@areca.com.tw
    Signed-off-by: ching Huang <ching2048@areca.com.tw>
    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/arcmsr/arcmsr_hba.c | 8 ++++++--
    1 file changed, 6 insertions(+), 2 deletions(-)

    diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
    index 4b79661275c9..930972cda38c 100644
    --- a/drivers/scsi/arcmsr/arcmsr_hba.c
    +++ b/drivers/scsi/arcmsr/arcmsr_hba.c
    @@ -1923,8 +1923,12 @@ static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandContr

    if (ccb->arc_cdb_size <= 0x300)
    arc_cdb_size = (ccb->arc_cdb_size - 1) >> 6 | 1;
    - else
    - arc_cdb_size = (((ccb->arc_cdb_size + 0xff) >> 8) + 2) << 1 | 1;
    + else {
    + arc_cdb_size = ((ccb->arc_cdb_size + 0xff) >> 8) + 2;
    + if (arc_cdb_size > 0xF)
    + arc_cdb_size = 0xF;
    + arc_cdb_size = (arc_cdb_size << 1) | 1;
    + }
    ccb_post_stamp = (ccb->smid | arc_cdb_size);
    writel(0, &pmu->inbound_queueport_high);
    writel(ccb_post_stamp, &pmu->inbound_queueport_low);
    --
    2.30.2


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