diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2016-11-29 17:13:57 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2016-11-29 20:52:38 +0300 |
| commit | 6a259b1f8a9e99b1ed114f8bf8b0cfccee130e54 (patch) | |
| tree | a22806fd05bb1dea841a2d9a17cc9610c02345da | |
| parent | 34ba5a80f249cd465d138705da138a82b4fe7e67 (diff) | |
| download | linux-6a259b1f8a9e99b1ed114f8bf8b0cfccee130e54.tar.xz | |
drm/i915: Initialize dev_priv->atomic_cdclk_freq at init time
Looks like we're only initializing dev_priv->atomic_cdclk_freq
at resume and commit times, not at init time. Let's do that as
well.
We're now hitting the 'WARN_ON(intel_state->cdclk == 0)' in
hsw_compute_linetime_wm() on account of populating
intel_state->cdclk from dev_priv->atomic_cdclk_freq.
Previously we were mispopulating intel_state->cdclk with
dev_priv->cdclk_freq which always had a proper value at init
time and hence the WARN_ON() didn't trigger.
Cc: stable@vger.kernel.org
Cc: Matthew Auld <matthew.auld@intel.com>
Reported-by: Matthew Auld <matthew.auld@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98902
Fixes: e0ca7a6be38c ("drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480428837-4207-1-git-send-email-ville.syrjala@linux.intel.com
Tested-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3b9e60aeca51..978463671462 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -16516,6 +16516,7 @@ int intel_modeset_init(struct drm_device *dev) intel_update_czclk(dev_priv); intel_update_cdclk(dev_priv); + dev_priv->atomic_cdclk_freq = dev_priv->cdclk_freq; intel_shared_dpll_init(dev); |