Signed-off-by: Damien Lespiau <[email protected]>
---
drivers/gpu/drm/i915/i915_debugfs.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 58c6fd4..8c750d5 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:
--
1.8.3.1
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