The wait for other gens was added in commit 564ed191f5d8 ("drm/i915:
gmch: fix stuck primary plane due to memory self-refresh mode") since
that's necessary when disabling cxsr. However, cxsr disabling was later
moved to intel_pre_disable_primary() in commit 87d4300a7dbc ("drm/i915:
Move intel_(pre_disable/post_enable)_primary to intel_display.c, and use
it there.") and that function got its own vblank wait for cxsr in commit
262cd2e154c2 ("drm/i915: CHV DDR DVFS support and another watermark
rewrite"). So remove the extra vblank wait from i9xx_crtc_distable().
Cc: Kalyan Kondapally <kalyan.kondapa...@intel.com>
Signed-off-by: Ander Conselvan de Oliveira
<ander.conselvan.de.olive...@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 568eefc..3cb9383 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6317,10 +6317,9 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
/*
* On gen2 planes are double buffered but the pipe isn't, so we must
* wait for planes to fully turn off before disabling the pipe.
- * We also need to wait on all gmch platforms because of the
- * self-refresh mode constraint explained above.
*/
- intel_wait_for_vblank(dev, pipe);
+ if (IS_GEN2(dev))
+ intel_wait_for_vblank(dev, pipe);
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->disable(encoder);
--
2.4.3
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