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    Subject[PATCH AUTOSEL for 4.4 32/32] net: gianfar_ptp: move set_fipers() to spinlock protecting area
    Date
    From: Yangbo Lu <yangbo.lu@nxp.com>

    [ Upstream commit 11d827a993a969c3c6ec56758ff63a44ba19b466 ]

    set_fipers() calling should be protected by spinlock in
    case that any interrupt breaks related registers setting
    and the function we expect. This patch is to move set_fipers()
    to spinlock protecting area in ptp_gianfar_adjtime().

    Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
    Acked-by: Richard Cochran <richardcochran@gmail.com>
    Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    ---
    drivers/net/ethernet/freescale/gianfar_ptp.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c
    index b40fba929d65..d540ee190038 100644
    --- a/drivers/net/ethernet/freescale/gianfar_ptp.c
    +++ b/drivers/net/ethernet/freescale/gianfar_ptp.c
    @@ -314,11 +314,10 @@ static int ptp_gianfar_adjtime(struct ptp_clock_info *ptp, s64 delta)
    now = tmr_cnt_read(etsects);
    now += delta;
    tmr_cnt_write(etsects, now);
    + set_fipers(etsects);

    spin_unlock_irqrestore(&etsects->lock, flags);

    - set_fipers(etsects);
    -
    return 0;
    }

    --
    2.11.0
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