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    Subject[PATCH 4.14 005/199] cxgb4/ptp: pass the sign of offset delta in FW CMD
    Date
    From: Raju Rangoju <rajur@chelsio.com>

    [ Upstream commit 50e0d28d3808146cc19b0d5564ef4ba9e5bf3846 ]

    cxgb4_ptp_fineadjtime() doesn't pass the signedness of offset delta
    in FW_PTP_CMD. Fix it by passing correct sign.

    Signed-off-by: Raju Rangoju <rajur@chelsio.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
    index 9f9d6cae39d55..758f2b8363282 100644
    --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
    +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
    @@ -246,6 +246,9 @@ static int cxgb4_ptp_fineadjtime(struct adapter *adapter, s64 delta)
    FW_PTP_CMD_PORTID_V(0));
    c.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(sizeof(c) / 16));
    c.u.ts.sc = FW_PTP_SC_ADJ_FTIME;
    + c.u.ts.sign = (delta < 0) ? 1 : 0;
    + if (delta < 0)
    + delta = -delta;
    c.u.ts.tm = cpu_to_be64(delta);

    err = t4_wr_mbox(adapter, adapter->mbox, &c, sizeof(c), NULL);
    --
    2.20.1


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