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由 Alex Williamson 提交于
If we're using vga switcheroo, the device may be turned off and poking it can return random state. This provokes an OOPS fixed separately by 8ff887c847 (drm/i915/dp: Be paranoid in case we disable a DP before it is attached). Trying to use and respond to events on a device that has been turned off by the user is in principle a silly thing to do. Signed-off-by: NAlex Williamson <alex.williamson@redhat.com> Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: NKeith Packard <keithp@keithp.com>
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