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| author | Keith Packard <keithp@keithp.com> | 2011-12-26 17:02:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-12-26 21:07:26 -0800 |
| commit | ebbd857e6b9a92c0aff4aacd1b1d2361d888633e (patch) | |
| tree | 598e75393461083817f9f06023a4f0b7b499c9b1 | |
| parent | 7f54492fbca0074d7db117d7972a80347e0b40a5 (diff) | |
| download | linux-rpi-ebbd857e6b9a92c0aff4aacd1b1d2361d888633e.tar.gz linux-rpi-ebbd857e6b9a92c0aff4aacd1b1d2361d888633e.tar.bz2 linux-rpi-ebbd857e6b9a92c0aff4aacd1b1d2361d888633e.zip | |
drm/i915: Disable semaphores by default on SNB
Semaphores still cause problems on some machines:
> From Udo Steinberg:
>
> With Linux-3.2-rc6 I'm frequently seeing GPU hangs when large amounts of
> text scroll in an xterm, such as when extracting a tar archive. Such as this
> one (note the timestamps):
>
> I can reproduce it fairly easily with something
> as simple as:
>
> while true; do dmesg; done
This patch turns them off on SNB while leaving them on for IVB.
Reported-by: Udo Steinberg <udo@hypervisor.org>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Eugeni Dodonov <eugeni@dodonov.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_execbuffer.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index c681dc149d2a..b9da8900ae4e 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -756,9 +756,9 @@ intel_enable_semaphores(struct drm_device *dev) if (i915_semaphores >= 0) return i915_semaphores; - /* Enable semaphores on SNB when IO remapping is off */ + /* Disable semaphores on SNB */ if (INTEL_INFO(dev)->gen == 6) - return !intel_iommu_enabled; + return 0; return 1; } |