From cc3da175b0807a3e15f0fb3dad2bc9c7ff071440 Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Tue, 15 Oct 2013 18:55:31 +0100 Subject: drm/i915: Make switching to the same CRC source a no-op Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- 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 58c6fd4c861..8c750d5110a 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: -- cgit v1.2.3