[Bug 86201] [VLV Bisected] Delayed boot and distorted text console after commit 773538e8

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Dec 10 23:28:48 PST 2014


https://bugs.freedesktop.org/show_bug.cgi?id=86201

--- Comment #12 from Egbert Eich <eich at pdx.freedesktop.org> ---
(In reply to Jesse Barnes from comment #11)
> The wait_for debugging seems to point at a potential solution.  I think
> Ville is debugging this along with some internal bugs, so I'll assign to him.

-ENOCONTXT
I may be missing some discussion here.

The idea to avoid the numerous calls to pps_lock()/unlock() during an EDID
transfer by locking on the outer instead of the inner layer to me still seems
to have some merit.
Daniel and Ville were afraid that the slightly simplistic solution I proposed
won't scale when new DPCP transfers are added. 
Thus it was proposed to add the pps_lock()/unlock() operations to the outer
layer where appropriate and extend the locking/unlocking itself with some ref
counter to avoid deadlocking by calling these operations on the outer and inner
layer.

Not sure if this idea is void now or still worth pursuing - Ville?

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