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net: stmmac: ptp: fix potentially overflowing expression

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[ Upstream commit eccffcf465 ]

Convert the u32 variable to type u64 in a context where expression of
type u64 is required to avoid potential overflow.

Fixes: e9e3720002 ("net: stmmac: ptp: update tas basetime after ptp adjust")
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Link: https://lore.kernel.org/r/20211223073928.37371-1-xiaoliang.yang_1@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Xiaoliang Yang
2021-12-23 15:39:28 +08:00
committed by Greg Kroah-Hartman
parent d2269ae485
commit be2473e5f3
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
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@@ -102,7 +102,7 @@ static int stmmac_adjust_time(struct ptp_clock_info *ptp, s64 delta)
time.tv_nsec = priv->plat->est->btr_reserve[0];
time.tv_sec = priv->plat->est->btr_reserve[1];
basetime = timespec64_to_ktime(time);
cycle_time = priv->plat->est->ctr[1] * NSEC_PER_SEC +
cycle_time = (u64)priv->plat->est->ctr[1] * NSEC_PER_SEC +
priv->plat->est->ctr[0];
time = stmmac_calc_tas_basetime(basetime,
current_time_ns,