8d0522d968
[ Upstream commit 377182a3cc5ae6cc17fb04d06864c975f9f71c18 ] When the firmware security is enabled, the pcie_aux_dbi_reg_addr register in the PCI controller is blocked. Therefore, ignore the result of writing to this register and assume it worked. Also remove the prints on errors in the internal ELBI write function. If the security is enabled, the firmware is responsible for setting this register correctly so we won't have any problem. If the security is disabled, the write will work (unless something is totally broken at the PCI level and then the whole sequence will fail). In addition, remove a write to register pcie_aux_dbi_reg_addr+4, which was never actually needed. Moreover, PCIE_DBI registers are blocked to access from host when firmware security is enabled. Use a different register to flush the writes. Signed-off-by: Oded Gabbay <ogabbay@kernel.org> 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.