Re: [Intel-wired-lan] [net-next PATCH 5/7] i40e: convert .adjfreq to .adjfine

["G, GurucharanX" <gurucharanx.g@intel.com>]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Jacob Keller
> Sent: Friday, July 22, 2022 3:00 AM
> To: Intel Wired LAN <intel-wired-lan@lists.osuosl.org>
> Subject: [Intel-wired-lan] [net-next PATCH 5/7] i40e: convert .adjfreq to
> .adjfine
> 
> The i40e driver currently implements the .adjfreq handler for frequency
> adjustments. This takes the adjustment parameter in parts per billion. The
> PTP core supports .adjfine which provides an adjustment in scaled parts per
> million. This has a higher resolution and can result in more precise
> adjustments for small corrections.
> 
> Convert the existing .adjfreq implementation to the newer .adjfine
> implementation. This is trivial since it just requires changing the divisor from
> 1000000000ULL to (1000000ULL << 16) in the mul_u64_u64_div_u64 call.
> 
> This improves the precision of the adjustments and gets us one driver closer
> to removing the old .adjfreq support from the kernel.
> 
> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_ptp.c | 22 ++++++++++++----------
>  1 file changed, 12 insertions(+), 10 deletions(-)
> 

Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
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