Commit 64d7839a authored by Harini Katakam's avatar Harini Katakam Committed by David S. Miller

net: macb: Fix ptp time adjustment for large negative delta

When delta passed to gem_ptp_adjtime is negative, the sign is
maintained in the ns_to_timespec64 conversion. Hence timespec_add
should be used directly. timespec_sub will just subtract the negative
value thus increasing the time difference.
Signed-off-by: default avatarHarini Katakam <harini.katakam@xilinx.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 30877961
......@@ -170,9 +170,6 @@ static int gem_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
if (delta > TSU_NSEC_MAX_VAL) {
gem_tsu_get_time(&bp->ptp_clock_info, &now);
if (sign)
now = timespec64_sub(now, then);
else
now = timespec64_add(now, then);
gem_tsu_set_time(&bp->ptp_clock_info,
......
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