CVS commit: src/sys/external/bsd/drm2/dist/drm/i915

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Wed Feb 25 13:35:25 UTC 2015

Modified Files:
        src/sys/external/bsd/drm2/dist/drm/i915: intel_ringbuffer.c

Log Message:
Back-port attempt [2/2] to fix i915drmkms on G4X, from Linux.

commit 95468892fdfeef6d1004b524e35957629efdbe00
Author: Chris Wilson <chris%chris-wilson.co.uk@localhost>
Date:   Thu Aug 7 15:39:54 2014 +0100

    drm/i915: Reset the HEAD pointer for the ring after writing START

    Ville found an old w/a documented for g4x that suggested that we need to
    reset the HEAD after writing START. This is a useful fixup for some of
    the g4x ring initialisation woes, but as usual, not all.

    v2: Do the rewrite unconditionally anyway


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 \
    src/sys/external/bsd/drm2/dist/drm/i915/intel_ringbuffer.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.