Vladimir Oltean
af7cd0366e
net: dsa: sja1105: Fix broken fixed-link interfaces on user ports
PHYLIB and PHYLINK handle fixed-link interfaces differently. PHYLIB wraps them in a software PHY ("pseudo fixed link") phydev construct such that .adjust_link driver callbacks see an unified API. Whereas PHYLINK simply creates a phylink_link_state structure and passes it to .mac_config. At the time the driver was introduced, DSA was using PHYLIB for the CPU/cascade ports (the ones with no net devices) and PHYLINK for everything else. As explained below: commit aab9c4067d2389d0adfc9c53806437df7b0fe3d5 Author: Florian Fainelli <f.fainelli@gmail.com> Date: Thu May 10 13:17:36 2018 -0700 net: dsa: Plug in PHYLINK support Drivers that utilize fixed links for user-facing ports (e.g: bcm_sf2) will need to implement phylink_mac_ops from now on to preserve functionality, since PHYLINK *does not* create a phy_device instance for fixed links. In the above patch, DSA guards the .phylink_mac_config callback against a NULL phydev pointer. Therefore, .adjust_link is not called in case of a fixed-link user port. This patch fixes the situation by converting the driver from using .adjust_link to .phylink_mac_config. This can be done now in a unified fashion for both slave and CPU/cascade ports because DSA now uses PHYLINK for all ports. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> 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.
Description
Languages
C
97.6%
Assembly
1%
Shell
0.5%
Python
0.3%
Makefile
0.3%