708ea87260
Before we can reset the seqno, we have to be sure the engines are idle. In debugfs/i915_drop_caches_set, we do wait_for_idle but allow ourselves to be interrupted. We should only proceed to reset the seqno then if we were not interrupted, and so also avoid overwriting the error status. References: https://bugs.freedesktop.org/show_bug.cgi?id=108133 Fixes:6b048706f4("drm/i915: Forcibly flush unwanted requests in drop-caches") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181004082119.24970-1-chris@chris-wilson.co.uk (cherry picked from commit88a83f3c2d) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.