92817dad7d
The auto-negotiation state in the PCS as set by phylink_mii_c22_pcs_config was previously always enabled when the driver is configured for in-band autonegotiation, even if autonegotiation was disabled on the interface with ethtool. Update the code to set the BMCR_ANENABLE bit based on the interface's autonegotiation enabled state. Update phylink_mii_c22_pcs_get_state to not check autonegotiation-related fields when autonegotiation is disabled. Update phylink_mac_pcs_get_state to initialize the state based on the interface's configured speed, duplex and pause parameters rather than to unknown when autonegotiation is disabled, before calling the driver's pcs_get_state functions, as they are not likely to provide meaningful data for these fields when autonegotiation is disabled. In this case the driver is really just filling in the link state field. Note that in cases where there is a downstream PHY connected, such as with SGMII and a copper PHY, the configuration set by ethtool is handled by phy_ethtool_ksettings_set and not propagated to the PCS. This is correct since SGMII or 1000Base-X autonegotiation with the PCS should normally still be used even if the copper side has disabled it. Signed-off-by: Robert Hancock <robert.hancock@calian.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
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.