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path: root/drivers/net/ethernet/freescale/fec_ptp.c
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Diffstat (limited to 'drivers/net/ethernet/freescale/fec_ptp.c')
-rw-r--r--drivers/net/ethernet/freescale/fec_ptp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index a583d89b13c4..a15663ad7f5e 100644
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -353,6 +353,7 @@ static int fec_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
tmp = readl(fep->hwp + FEC_ATIME_INC) & FEC_T_INC_MASK;
tmp |= corr_ns << FEC_T_INC_CORR_OFFSET;
writel(tmp, fep->hwp + FEC_ATIME_INC);
+ corr_period = corr_period > 1 ? corr_period - 1 : corr_period;
writel(corr_period, fep->hwp + FEC_ATIME_CORR);
/* dummy read to update the timer. */
timecounter_read(&fep->tc);