Multiple simultaneous masters?

Thomas Hellstrom thellstrom at
Tue Feb 18 12:18:02 PST 2014

It turns out that if we have two clients, one opening /dev/dri/card0 and
one opending /dev/dri/controlD64, both will attempt to become active master.

That seems a little illogical to me (and makes the vmwgfx driver BUG).
Shouldn't we have at most one active master per device, and hence
attempt to replace

file_priv->minor->master with


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