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| author | Ben Widawsky <benjamin.widawsky@intel.com> | 2013-12-17 20:06:00 -0800 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-01-22 09:58:26 +0100 |
| commit | f0a9f74c0d735bc1b5a2811fe73c99604394374e (patch) | |
| tree | d9cacf6c1c9dfb376fe41a7cb0316b26dcf141dd /drivers/gpu | |
| parent | 8b78f0e588e22c3d5a8cd3ac260023ae7f942828 (diff) | |
| download | blackbird-op-linux-f0a9f74c0d735bc1b5a2811fe73c99604394374e.tar.gz blackbird-op-linux-f0a9f74c0d735bc1b5a2811fe73c99604394374e.zip | |
drm/i915: Fix disabled semaphores
The ring will emit too many if semaphores are disabled since we do not
add the correct number to num_dwords anymore.
This was introduced:
commit 52ed23253b68e1cf154b03d91bed619504cf955b
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Mon Dec 16 20:50:38 2013 -0800
drm/i915: Don't emit mbox updates without semaphores
FWIW, the bug was fixed later in the series.
/me hangs head in shame.
Daniel: Also note that we should have merged the read-only semaphore
modparam before this patch.
Reported-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 8fcb32a02cb4..b7f1742caf87 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -673,10 +673,12 @@ gen6_add_request(struct intel_ring_buffer *ring) if (ret) return ret; - for_each_ring(useless, dev_priv, i) { - u32 mbox_reg = ring->signal_mbox[i]; - if (mbox_reg != GEN6_NOSYNC) - update_mboxes(ring, mbox_reg); + if (i915_semaphore_is_enabled(dev)) { + for_each_ring(useless, dev_priv, i) { + u32 mbox_reg = ring->signal_mbox[i]; + if (mbox_reg != GEN6_NOSYNC) + update_mboxes(ring, mbox_reg); + } } intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
