diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-04-17 06:38:35 +0100 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-05-04 12:38:02 -0700 |
| commit | 31acbcc408f412d1ba73765b846c38642be553c3 (patch) | |
| tree | 6a1f340e21b0c24d067eccbc369c1d96098e6ffc /drivers/gpu/drm/i915/intel_display.c | |
| parent | 2dd251f0a294300a1cf8f4b63768145fa6153c4d (diff) | |
drm/i915/dp: Be paranoid in case we disable a DP before it is attached
Given that the hardware may be left in a random condition by the BIOS,
it is conceivable that we then attempt to clear the DP_PIPEB_SELECT bit
without us ever enabling/attaching the DP encoder to a pipe. Thus
causing a NULL deference when we attempt to wait for a vblank on that
crtc.
Reported-and-tested-by: Bryan Christ <bryan.christ@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36314
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36456
Reported-and-tested-by: Bo Wang <bo.b.wang@intel.com>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
0 files changed, 0 insertions, 0 deletions