[SRU][Artful][PATCH 0/1] drm/i915/bios: filter out invalid DDC pins from VBT child devices

[Joseph Salisbury]

BugLink: http://bugs.launchpad.net/bugs/1764194

== SRU Justification ==
This bug causes a Dell Latitude 5490/5590 with BIOS update 1.1.9 to get a 
black screen at boot. Specifying 'nomodeset' on the kernel command line works 
around the problem.

Intel resolved the problem in upstream commit a3520b8992e5.  This commit
is now in mainline as of 4.17.rc2.  It has also been cc'd to upstream
stable.

This patch is also needed in Bionic.  Artful needed a minor backport, so
it is being sent separate of Bionic.  

== Fix ==
a3520b8992e5 ("drm/i915/bios: filter out invalid DDC pins from VBT child devices")

== Regression Potential ==
Low.  This commit was also cc'd to upstream stable, so it recieved
additional upstream review.

== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.

Jani Nikula (1):
  drm/i915/bios: filter out invalid DDC pins from VBT child devices

 drivers/gpu/drm/i915/intel_bios.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

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2.7.4