diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2013-07-09 16:00:31 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-07-10 08:03:45 +0200 |
| commit | c11e5f35ab490bd30591563816fbc83526521777 (patch) | |
| tree | 281e86f5b2862bb3d3d459ef7680bd1233843bc4 /lib/gcd.c | |
| parent | d4eead50eb206b875f54f66cc0f6ec7d54122c28 (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 <jbarnes@virtuousgeek.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66139
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'lib/gcd.c')
0 files changed, 0 insertions, 0 deletions