3d0f98fa66
hwm_pcode_read_i1 is called during i915 load. This results in the following warning from snb_pcode_read because POWER_SETUP_SUBCOMMAND_READ_I1 is unsupported on DG1/DG2. [drm:snb_pcode_read [i915]] warning: pcode (read from mbox 47c) \ mailbox access failed for snb_pcode_read_p [i915]: -6 The code handles the unsupported command but the warning in dmesg is a red herring which has resulted in a couple of bugs being filed. Therefore silence the warning by avoiding calling snb_pcode_read_p for DG1/DG2. Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221203031454.1280538-1-ashutosh.dixit@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.