[PATCH] drm/i915: Disable pipe crc before enabling

[Mika Kahola]

Disable pipe crc before re-enabling it again to ensure pipe crc is
clean.

References: https://bugs.freedesktop.org/show_bug.cgi?id=103166

Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b4744a68cd88..a2b0034e241e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4719,6 +4719,10 @@ i915_fifo_underrun_reset_write(struct file *filp,
 			DRM_DEBUG_KMS("Re-arming FIFO underruns on pipe %c\n",
 				      pipe_name(intel_crtc->pipe));
 
+			DRM_DEBUG_KMS("re-enabling pipe CRC\n");
+			intel_crtc_disable_pipe_crc(intel_crtc);
+			intel_crtc_enable_pipe_crc(intel_crtc);
+
 			intel_crtc_arm_fifo_underrun(intel_crtc, crtc_state);
 		}
 
-- 
2.17.1