e157c8475e
Punit id can also be retrieved from ISST_IF_GET_PHY_ID. punit id is unique within a Package/Die, and together with Package id and Die id, they can be used to refer to a specific SST power domain. For current platforms, Punit id is always Zero. So no functional changes are expected for the current platforms. While here, prevent issuing IOCTL if the file /dev/isst_interface can't be opened. Signed-off-by: Zhang Rui <rui.zhang@intel.com> [srinivas.pandruvada@linux.intel.com: changelog edits] Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
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.