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[ Upstream commit329a3678ec] Link speed advertising in igc has two problems: - When setting the advertisement via ethtool, the link speed is converted to the legacy 32 bit representation for the intel PHY code. This inadvertently drops ETHTOOL_LINK_MODE_2500baseT_Full_BIT (being beyond bit 31). As a result, any call to `ethtool -s ...' drops the 2500Mbit/s link speed from the PHY settings. Only reloading the driver alleviates that problem. Fix this by converting the ETHTOOL_LINK_MODE_2500baseT_Full_BIT to the Intel PHY ADVERTISE_2500_FULL bit explicitly. - Rather than checking the actual PHY setting, the .get_link_ksettings function always fills link_modes.advertising with all link speeds the device is capable of. Fix this by checking the PHY autoneg_advertised settings and report only the actually advertised speeds up to ethtool. Fixes:8c5ad0dae9("igc: Add ethtool support") Signed-off-by: Corinna Vinschen <vinschen@redhat.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Sasha Levin <sashal@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 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.