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path: root/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
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Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
index f4074e25fb71..25136941a964 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
@@ -125,7 +125,7 @@ static int stmmac_adjust_systime(void __iomem *ioaddr, u32 sec, u32 nsec,
* programmed with (2^32 – <new_sec_value>)
*/
if (gmac4)
- sec = (100000000ULL - sec);
+ sec = -sec;
value = readl(ioaddr + PTP_TCR);
if (value & PTP_TCR_TSCTRLSSR)