[Bug 58897] New: [HSW CRW]*ERROR* Unknown unclaimed register

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58897

          Priority: medium
            Bug ID: 58897
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW CRW]*ERROR* Unknown unclaimed register
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 72323
  --> https://bugs.freedesktop.org/attachment.cgi?id=72323&action=edit
dmesg from Booting up

Environment:
---------------------
kernel commit: c0c36b941b6f0be6ac74f340040cbb29d6a0b06c
drm/i915: Return the real error code from intel_set_mode()


Description:
---------------------
After booting up, there's an error in dmesg like below:

[drm:i915_write32] *ERROR* Unknown unclaimed register before writing to c5100

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