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authorGuenter Roeck <[email protected]>2013-07-09 16:00:31 -0700
committerDaniel Vetter <[email protected]>2013-07-10 08:03:45 +0200
commitc11e5f35ab490bd30591563816fbc83526521777 (patch)
tree281e86f5b2862bb3d3d459ef7680bd1233843bc4 /tools/perf/scripts/python
parentd4eead50eb206b875f54f66cc0f6ec7d54122c28 (diff)
Partially revert "drm/i915: unconditionally use mt forcewake on hsw/ivb"
This patch partially reverts commit 36ec8f877481449bdfa072e6adf2060869e2b970 for IvyBridge CPUs. The original commit results in repeated 'Timed out waiting for forcewake old ack to clear' messages on a Supermicro C7H61 board (BIOS version 2.00 and 2.00b) with i7-3770K CPU. It ultimately results in a hangup if the system is highly loaded. Reverting the commit for IvyBridge CPUs fixes the issue. Issue a warning if the CPU is IvyBridge and mt forcewake is disabled, since this condition can result in secondary issues. v2: Only revert patch for Ivybridge CPUs Issue info message if mt forcewake is disabled on Ivybridge Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60541 Cc: Jesse Barnes <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Mika Kuoppala <[email protected]> Signed-off-by: Guenter Roeck <[email protected]> Cc: [email protected] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66139 Signed-off-by: Daniel Vetter <[email protected]>
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