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To allow the ptp_chardev code to correctly detect whether crosststamps are supported, we need to conditionally populate the .getcrosststamp() method. As the previous patch implements that functionality by detecting whether the platform glue provides a crosststamp() method, arrange for the dwmac-intel code to only populate this if the X86 ART feature is present, rather than testing for it at runtime in intel_crosststamp(). This reflects what other x86 PTP clock drivers do, e.g. ice_ptp_set_funcs_e830(), e1000e_ptp_init(), idpf_ptp_set_caps() etc. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1uto2i-00000001seA-0lxv@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.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 reStructuredText 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.