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* [PATCH v2 1/6] drm/i915: Update watermark state correctly in sanitize_watermarks
@ 2017-11-09 16:24 ` Maarten Lankhorst
  0 siblings, 0 replies; 19+ messages in thread
From: Maarten Lankhorst @ 2017-11-09 16:24 UTC (permalink / raw)
  To: intel-gfx; +Cc: Maarten Lankhorst, stable

We no longer use intel_crtc->wm.active for watermarks any more,
which was incorrect. But this uncovered a bug in sanitize_watermarks(),
which meant that we wrote the correct watermarks, but the next
update would still use the wrong hw watermarks for calculating.
This caused all further updates to fail with -EINVAL and the
log would reveal an error like the one below:

[   10.043902] [drm:ilk_validate_wm_level.part.8 [i915]] Sprite WM0 too large 56 (max 0)
[   10.043960] [drm:ilk_validate_pipe_wm [i915]] LP0 watermark invalid
[   10.044030] [drm:intel_crtc_atomic_check [i915]] No valid intermediate pipe watermarks are possible

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: b6b178a77210 ("drm/i915: Calculate ironlake intermediate watermarks correctly, v2.")
Cc: stable@vger.kernel.org #v4.8+
---
 drivers/gpu/drm/i915/intel_display.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 84817ccc5305..17665ee06c9a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14442,6 +14442,8 @@ static void sanitize_watermarks(struct drm_device *dev)
 
 		cs->wm.need_postvbl_update = true;
 		dev_priv->display.optimize_watermarks(intel_state, cs);
+
+		to_intel_crtc_state(crtc->state)->wm = cs->wm;
 	}
 
 put_state:
-- 
2.15.0

^ permalink raw reply related	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2017-11-10 10:40 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-09 16:24 [PATCH v2 1/6] drm/i915: Update watermark state correctly in sanitize_watermarks Maarten Lankhorst
2017-11-09 16:24 ` Maarten Lankhorst
2017-11-09 16:24 ` [PATCH v2 2/6] drm/i915: Handle adjust better in intel_pipe_config_compare Maarten Lankhorst
2017-11-09 17:04   ` Ville Syrjälä
2017-11-09 16:24 ` [PATCH v2 3/6] drm/i915: Pass crtc_state to ips toggle functions Maarten Lankhorst
2017-11-09 17:09   ` Ville Syrjälä
2017-11-09 17:31     ` Maarten Lankhorst
2017-11-09 17:51       ` Ville Syrjälä
2017-11-09 17:56         ` Maarten Lankhorst
2017-11-09 18:17           ` Ville Syrjälä
2017-11-09 16:24 ` [PATCH v2 4/6] drm/i915: Handle ips_enabled in fastset Maarten Lankhorst
2017-11-09 17:17   ` Ville Syrjälä
2017-11-09 16:24 ` [PATCH v2 5/6] drm/i915: Enable FIFO underrun reporting after initial fastset, v2 Maarten Lankhorst
2017-11-09 17:15   ` Ville Syrjälä
2017-11-10  8:02     ` Maarten Lankhorst
2017-11-10 10:40       ` Ville Syrjälä
2017-11-09 16:24 ` [PATCH v2 6/6] drm/i915: Re-enable fastboot by default Maarten Lankhorst
2017-11-09 16:45 ` ✓ Fi.CI.BAT: success for series starting with [v2,1/6] drm/i915: Update watermark state correctly in sanitize_watermarks Patchwork
2017-11-09 17:28 ` ✓ Fi.CI.IGT: " Patchwork

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