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| author | James Ausmus <[email protected]> | 2017-12-01 02:17:00 +0000 |
|---|---|---|
| committer | Joonas Lahtinen <[email protected]> | 2017-12-05 14:56:41 +0000 |
| commit | 46442beed972d439210580739bc006713375c5b4 (patch) | |
| tree | b1ba40eefdad7f5de70072c9391cec5d9d6463dc /tools/perf/scripts/python/check-perf-trace.py | |
| parent | drm/i915: Fix vblank timestamp/frame counter jumps on gen2 (diff) | |
| download | kernel-46442beed972d439210580739bc006713375c5b4.tar.gz kernel-46442beed972d439210580739bc006713375c5b4.zip | |
drm/i915/cnl: Mask previous DDI - PLL mapping
Without masking out the old value, we can end up pointing the DDI to a
disabled PLL, which makes the system fall over. Mask out the previous
value before setting the PLL to DDI mapping.
This can be observed by running igt/testdisplay with both an eDP and
HDMI/DP output active.
v2: Add the Bugzilla link
Fixes: 555e38d273172 ("drm/i915/cnl: DDI - PLL mapping")
Testcase: igt/testdisplay
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103997
Cc: Rodrigo Vivi <[email protected]>
Cc: Matt Atwood <[email protected]>
Signed-off-by: James Ausmus <[email protected]>
Reviewed-by: Rodrigo Vivi <[email protected]>
Tested-by: Rodrigo Vivi <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 23a7068ec581fcc6fb61039448632d25987b1fae)
Signed-off-by: Joonas Lahtinen <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions