diff options
| author | Xiaoliang Yang <xiaoliang.yang_1@nxp.com> | 2021-12-23 10:39:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-29 14:28:46 +0300 |
| commit | be2473e5f377fb7fe471a5096f37a2d73a8367e6 (patch) | |
| tree | 4701794d22885615998eaba7c444d4ef8e9d70fd /drivers/net/ethernet | |
| parent | d2269ae48598e05b59ec9ea9e6e44fd33941130d (diff) | |
| download | linux-be2473e5f377fb7fe471a5096f37a2d73a8367e6.tar.xz | |
net: stmmac: ptp: fix potentially overflowing expression
[ Upstream commit eccffcf4657ab9a148faaa0eb354d2a091caf552 ]
Convert the u32 variable to type u64 in a context where expression of
type u64 is required to avoid potential overflow.
Fixes: e9e3720002f6 ("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>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c index 580cc035536b..be9b58b2abf9 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c @@ -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, |