diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-04-17 06:38:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-21 15:13:08 -0700 |
| commit | 9e532c331c378b6ba7a0886b8410bcb523663b28 (patch) | |
| tree | eff374c424d6b6bd0ac1e45a84b95db5c83eb88d /ipc | |
| parent | e277c750ea81076d8dc68694acc7994a024d83b2 (diff) | |
drm/i915/dp: Be paranoid in case we disable a DP before it is attached
commit 31acbcc408f412d1ba73765b846c38642be553c3 upstream.
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>
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions