cfdd174798
Assuming intel_crtc_arm_fifo_underrun() only gets called when there's no pending plane updates we can utilize it on gen2 by checking the active_planes bitmask so that we only re-enable underrun reporting if some planes are active. i915_fifo_underrun_reset_write() seems to have the necessary hw_done/flip_done waits in place. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-8-ville.syrjala@linux.intel.com Reviewed-by: José Roberto de Souza <jose.souza@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.