[Bug 101516] [BAT][BYT] WARN intel_uncore.c:792 __unclaimed_reg_debug (reg 0x18650c)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101516

krisman at collabora.co.uk changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|NEW                         |RESOLVED

--- Comment #2 from krisman at collabora.co.uk ---
(In reply to Martin Peres from comment #0)
> Our two baytrails starting reporting the following warning randomly when
> running igt at kms_pipe_crc_basic@suspend-read-crc-pipe-b, starting from
> CI_DRM_2743:
> 
> [  502.355408] Unclaimed read from register 0x18650c

For the record, MMIO(650c) is GCI_CONTROL, which is read at
vlv_program_pfi_credits.  Specification explains that a MMIO is unclaimable if
performed in an address of a powered down power well, so I suppose the same
workaround for 101517 should apply here.    

With that in mind, I'm marking this as a DUP of 101517.

*** This bug has been marked as a duplicate of bug 101517 ***

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