mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-05 18:41:58 +09:00
ef167cc188
The new adjustment should be based on the base frequency, not the I40E_PTP_40GB_INCVAL in i40e_ptp_adjfine(). This issue was introduced in commit3626a690b7("i40e: use mul_u64_u64_div_u64 for PTP frequency calculation"), frequency is left just as base I40E_PTP_40GB_INCVAL before the commit. After the commit, frequency is the I40E_PTP_40GB_INCVAL times the ptp_adj_mult value. But then the diff is applied on the wrong value, and no multiplication is done afterwards. It was accidentally fixed in commit1060707e38("ptp: introduce helpers to adjust by scaled parts per million"). It uses adjust_by_scaled_ppm correctly performs the calculation and uses the base adjustment, so there's no error here. But it is a new feature and doesn't need to backported to the stable releases. This issue affects both v6.0 and v6.1, and the v6.1 version is an LTS release. Therefore, the patch only needs to be applied to v6.1 stable. Fixes:3626a690b7("i40e: use mul_u64_u64_div_u64 for PTP frequency calculation") Cc: <stable@vger.kernel.org> # 6.1 Cc: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.