diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-27 09:02:01 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-28 09:11:44 +0100 |
| commit | bcbdb6d01150dcc1769ddc9baaaf7f102f27f919 (patch) | |
| tree | e0e93c16a85afe9369480626aa079e2a0c11c64f /drivers/gpu/drm/drm_mipi_dsi.c | |
| parent | 19ab4ed329393c0674f2b78fb71365a9461ee79b (diff) | |
drm/i915: Protect gen7 irq_seqno_barrier with uncore lock
Faced with sporadic machine hangs on gen7, that mimic the issue of
concurrent writes to the same cacheline and seem to start with
commit 9b9ed3093613 (drm/i915: Remove forcewake dance from seqno/irq
barrier on legacy gen6+), let us restore the spinlock around the mmio
read.
Fixes: 9b9ed3093613 (drm/i915: Remove forcewake dance from seqno/irq...)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461744121-27051-1-git-send-email-chris@chris-wilson.co.uk
Tested-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_mipi_dsi.c')
0 files changed, 0 insertions, 0 deletions