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<body><span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - [BAT][BYT] WARN intel_uncore.c:792 __unclaimed_reg_debug (reg 0x18650c)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101516">bug 101516</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>DUPLICATE
</td>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - [BAT][BYT] WARN intel_uncore.c:792 __unclaimed_reg_debug (reg 0x18650c)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101516#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - [BAT][BYT] WARN intel_uncore.c:792 __unclaimed_reg_debug (reg 0x18650c)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101516">bug 101516</a>
from <span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
</span></b>
<pre>(In reply to Martin Peres from <a href="show_bug.cgi?id=101516#c0">comment #0</a>)
<span class="quote">> Our two baytrails starting reporting the following warning randomly when
> running igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b, starting from
> CI_DRM_2743:
>
> [ 502.355408] Unclaimed read from register 0x18650c</span >
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 <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][BYT,BSW] WARN_ON(dev_priv->uncore.funcs.mmio_readl(dev_priv, (((const i915_reg_t){ .reg = (0x180000 + 0x650C) })), true) & (1 << 27))"
href="show_bug.cgi?id=101517">bug 101517</a> ***</pre>
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