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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-11-29 15:54:11 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-12-01 18:05:15 +0300 |
| commit | 5816d9cbc0a0fbf232fe297cefcb85361a3cde90 (patch) | |
| tree | a01ac77664724f84fa09998c8b32ae15b1aa072b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 2085cc5d3ccdc804eb320d1403be31cf28650552 (diff) | |
| download | linux-5816d9cbc0a0fbf232fe297cefcb85361a3cde90.tar.xz | |
drm/i915: Fix deadlock in i830_disable_pipe()
i830_disable_pipe() gets called from the power well code, and thus
we're already holding the power domain mutex. That means we can't
call plane->get_hw_state() as it will also try to grab the
same mutex and will thus deadlock.
Replace the assert_plane() calls (which calls ->get_hw_state()) with
just raw register reads in i830_disable_pipe(). As a bonus we can
now get a warning if plane C is enabled even though we don't even
expose it as a drm plane.
v2: Do a separate WARN_ON() for each plane (Chris)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Fixes: 51f5a0963984 ("drm/i915: Add .get_hw_state() method for planes")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171129125411.29055-1-ville.syrjala@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions