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Ido Schimmel says: ==================== mlxsw: Query number of modules from firmware Vadim says: The patchset adds support for a new field "num_of_modules" of Management General Peripheral Information Register (MGPIR), providing the maximum number of QSFP modules, which can be supported by the system. It allows to obtain the number of QSFP modules directly from this field, as a static data, instead of old method of getting this info through "network port to QSFP module" mapping. With the old method, in case of port dynamic re-configuration some modules can logically "disappear" as a result of port split operations, which can cause some modules to appear missing. Such scenario can happen on a system equipped with a BMC card, while PCI chip driver at host CPU side can perform some ports "split" or "unsplit" operations, while BMC side I2C chip driver reads the "port-to-module" mapping. Add common API for FW "minor" and "subminor" versions validation and share it between PCI and I2C based drivers. Add FW version validation for "minimal" driver, because use of new field "num_of_modules" in MGPIR register is not backward compatible. ==================== 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.