c25c961fc7
As preparation for implementing bridge port isolation, move the logic to add and remove bits in the port matrix into a new helper mt7530_update_port_member(), which is called from mt7530_port_bridge_join() and mt7530_port_bridge_leave(). Another part of the preparation is using dsa_port_offloads_bridge_dev() instead of dsa_port_offloads_bridge() to check for bridge membership, as we don't have a struct dsa_bridge in mt7530_port_bridge_flags(). The port matrix setting is slightly streamlined, now always first setting the mt7530_port's pm field and then writing the port matrix from that field into the hardware register, instead of duplicating the bit manipulation for both the struct field and the register. mt7530_port_bridge_join() was previously using |= to update the port matrix with the port bitmap, which was unnecessary, as pm would only have the CPU port set before joining a bridge; a simple assignment can be used for both joining and leaving (and will also work when individual bits are added/removed in port_bitmap with regard to the previous port matrix, which is what happens with port isolation). No functional change intended. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Arınç ÜNAL <arinc.unal@arinc9.com> Tested-by: Arınç ÜNAL <arinc.unal@arinc9.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 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.