drm/i915: Only WARN about a stuck hotplug irq ONCE
drm/i915: Only WARN about a stuck hotplug irq ONCE

It seems that hardware that is broken enough to emit a hotplug IRQ even
though the pin is surposedly disable, will do so indefinitely.

Note: There's a good chance the underlying issue has been fixed with

commit 0ce99f749b3834edeb500e17d6ad17e86b60ff83
Author: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>
Date:   Fri Jul 26 11:27:49 2013 +0200

    drm/i915: fix gen4 digital port hotplug definitions

References: https://bugzilla.redhat.com/show_bug.cgi?id=1051170
Link: https://bugzilla.redhat.com/attachment.cgi?id=847786
Signed-off-by: Chris Wilson <711c73f64afdce07b7e38039a96d2224209e9a6c@chris-wilson.co.uk>
[danvet: Add note about the potential fix.]
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs