[Bug 102543] [BAT][HSW] igt at tools_test@tools_test - Unclaimed read from register 0x[4c]400c

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102543

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit d7a133d886b45651e36e7065998b1413d379ac1f
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Sep 7 14:44:41 2017 +0100

    drm/i915: Disable mmio debugging during user access

    If the user bypasses i915 and accesses mmio directly, that easily
    confuses our automatic mmio debugging (any error we then detect is
    likely to be as a result of the user). Since we expect userspace to open
    debugfs/i915_forcewake_user if i915.ko is loaded and they want mmio
    access, that makes the opportune time to disable our debugging for
    duration of the bypass.

    v2: Move the fiddling of uncore internals to uncore.c

The issue in intel_reg_dump is still there, just not triggering a kernel
warning.

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