diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2013-10-15 18:55:31 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-16 13:32:11 +0200 |
| commit | cc3da175b0807a3e15f0fb3dad2bc9c7ff071440 (patch) | |
| tree | 8f90ac3c9d357d0ff94698d41c0180a3b4cd1aa0 /drivers/gpu/drm/i915 | |
| parent | ac2300d4d5c2e9e4d82361a582cf1df3ec22fec7 (diff) | |
| download | linux-rt-cc3da175b0807a3e15f0fb3dad2bc9c7ff071440.tar.gz | |
drm/i915: Make switching to the same CRC source a no-op
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 58c6fd4c8610..8c750d5110a1 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1804,6 +1804,7 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe, enum intel_pipe_crc_source source) { struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe]; u32 val; @@ -1812,7 +1813,10 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe, if (!IS_IVYBRIDGE(dev)) return -ENODEV; - dev_priv->pipe_crc[pipe].source = source; + if (pipe_crc->source == source) + return 0; + + pipe_crc->source = source; switch (source) { case INTEL_PIPE_CRC_SOURCE_PLANE1: |