diff options
| author | Matt Roper | 2016-06-17 22:42:18 +0200 |
|---|---|---|
| committer | Maarten Lankhorst | 2016-08-18 14:26:41 +0200 |
| commit | 1b54a880b250acc226b13cea221b90aa1b3e37dd (patch) | |
| tree | fa30a36076f3ed6dad7e969580ad8880eaa5b4f8 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915: Add missing kerneldoc for guc_client_alloc:engines (diff) | |
| download | kernel-qcow2-linux-1b54a880b250acc226b13cea221b90aa1b3e37dd.tar.gz kernel-qcow2-linux-1b54a880b250acc226b13cea221b90aa1b3e37dd.tar.xz kernel-qcow2-linux-1b54a880b250acc226b13cea221b90aa1b3e37dd.zip | |
drm/i915/gen9: Initialize intel_state->active_crtcs during WM sanitization (v2)
intel_state->active_crtcs is usually only initialized when doing a
modeset. During our first atomic commit after boot, we're effectively
faking a modeset to sanitize the DDB/wm setup, so ensure that this field
gets initialized before use.
v2:
- Don't clobber active_crtcs if our first commit really is a modeset
(Maarten)
- Grab connection_mutex when faking a modeset during sanitization
(Maarten)
Reported-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Tested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466196140-16336-2-git-send-email-matthew.d.roper@intel.com
Cc: stable@vger.kernel.org #v4.7+
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 99014d7821c2..d74c26f1cf77 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3920,9 +3920,24 @@ skl_compute_ddb(struct drm_atomic_state *state) * pretend that all pipes switched active status so that we'll * ensure a full DDB recompute. */ - if (dev_priv->wm.distrust_bios_wm) + if (dev_priv->wm.distrust_bios_wm) { + ret = drm_modeset_lock(&dev->mode_config.connection_mutex, + state->acquire_ctx); + if (ret) + return ret; + intel_state->active_pipe_changes = ~0; + /* + * We usually only initialize intel_state->active_crtcs if we + * we're doing a modeset; make sure this field is always + * initialized during the sanitization process that happens + * on the first commit too. + */ + if (!intel_state->modeset) + intel_state->active_crtcs = dev_priv->active_crtcs; + } + /* * If the modeset changes which CRTC's are active, we need to * recompute the DDB allocation for *all* active pipes, even |