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ptp: switch to using FIELD_GET_SIGNED()

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Switch from sign_extend32(FIELD_GET()) to the dedicated
FIELD_GET_SIGNED() and don't calculate the fields length explicitly.

Signed-off-by: Yury Norov <ynorov@nvidia.com>
This commit is contained in:
Yury Norov
2026-04-27 17:41:26 -04:00
parent f0e5d07ac5
commit f149354ab7
1 changed files with 2 additions and 2 deletions
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4
drivers/ptp/ptp_fc3.c
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@@ -55,8 +55,8 @@ static s64 tdc_meas2offset(struct idtfc3 *idtfc3, u64 meas_read)
{
s64 coarse, fine;
fine = sign_extend64(FIELD_GET(FINE_MEAS_MASK, meas_read), 12);
coarse = sign_extend64(FIELD_GET(COARSE_MEAS_MASK, meas_read), (39 - 13));
fine = FIELD_GET_SIGNED(FINE_MEAS_MASK, meas_read);
coarse = FIELD_GET_SIGNED(COARSE_MEAS_MASK, meas_read);
fine = div64_s64(fine * NSEC_PER_SEC, idtfc3->tdc_apll_freq * 62LL);
coarse = div64_s64(coarse * NSEC_PER_SEC, idtfc3->time_ref_freq);