diff options
| author | Karol Kolacinski <karol.kolacinski@intel.com> | 2021-11-04 16:52:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-22 11:32:42 +0300 |
| commit | 89f9c880141eef84ee9001dd6969067be72145d0 (patch) | |
| tree | 272d7441ddee44eec5b1a432259d2b54e1fa757b /drivers/net/ethernet | |
| parent | 68014890e4382ff9192e1357be39b7d0455665fa (diff) | |
| download | linux-89f9c880141eef84ee9001dd6969067be72145d0.tar.xz | |
ice: Use div64_u64 instead of div_u64 in adjfine
[ Upstream commit 0013881c1145d36bf26165bb70fdd7560a5507a3 ]
Change the division in ice_ptp_adjfine from div_u64 to div64_u64.
div_u64 is used when the divisor is 32 bit but in this case incval is
64 bit and it caused incorrect calculations and incval adjustments.
Fixes: 06c16d89d2cb ("ice: register 1588 PTP clock device object for E810 devices")
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_ptp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index d1ef3d48a4b0..9df546984de2 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -459,7 +459,7 @@ static int ice_ptp_adjfine(struct ptp_clock_info *info, long scaled_ppm) scaled_ppm = -scaled_ppm; } - while ((u64)scaled_ppm > div_u64(U64_MAX, incval)) { + while ((u64)scaled_ppm > div64_u64(U64_MAX, incval)) { /* handle overflow by scaling down the scaled_ppm and * the divisor, losing some precision */ |