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drm/i915/overlay: Drop struct_mutex guard

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The overlay uses the modeset mutex to control itself and only required
the struct_mutex for requests, which is now obsolete.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-16-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-10-04 14:40:10 +01:00
parent a4e7ccdac3
commit cb5eb07278
3 changed files with 1 additions and 23 deletions
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7
drivers/gpu/drm/i915/display/intel_display.c
View File

@ -5738,13 +5738,8 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
{
if (intel_crtc->overlay) {
struct drm_device *dev = intel_crtc->base.dev;
mutex_lock(&dev->struct_mutex);
if (intel_crtc->overlay)
(void) intel_overlay_switch_off(intel_crtc->overlay);
mutex_unlock(&dev->struct_mutex);
}
/* Let userspace switch the overlay on again. In most cases userspace
* has to recompute where to put it anyway.

13
drivers/gpu/drm/i915/display/intel_overlay.c
View File

@ -439,8 +439,6 @@ static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
struct i915_request *rq;
u32 *cs;
lockdep_assert_held(&dev_priv->drm.struct_mutex);
/*
* Only wait if there is actually an old frame to release to
* guarantee forward progress.
@ -751,7 +749,6 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
struct i915_vma *vma;
int ret, tmp_width;
lockdep_assert_held(&dev_priv->drm.struct_mutex);
WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
ret = intel_overlay_release_old_vid(overlay);
@ -852,7 +849,6 @@ int intel_overlay_switch_off(struct intel_overlay *overlay)
struct drm_i915_private *dev_priv = overlay->i915;
int ret;
lockdep_assert_held(&dev_priv->drm.struct_mutex);
WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
ret = intel_overlay_recover_from_interrupt(overlay);
@ -1068,11 +1064,7 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
if (!(params->flags & I915_OVERLAY_ENABLE)) {
drm_modeset_lock_all(dev);
mutex_lock(&dev->struct_mutex);
ret = intel_overlay_switch_off(overlay);
mutex_unlock(&dev->struct_mutex);
drm_modeset_unlock_all(dev);
return ret;
@ -1088,7 +1080,6 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
drm_modeset_lock_all(dev);
mutex_lock(&dev->struct_mutex);
if (i915_gem_object_is_tiled(new_bo)) {
DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
@ -1152,14 +1143,12 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
if (ret != 0)
goto out_unlock;
mutex_unlock(&dev->struct_mutex);
drm_modeset_unlock_all(dev);
i915_gem_object_put(new_bo);
return 0;
out_unlock:
mutex_unlock(&dev->struct_mutex);
drm_modeset_unlock_all(dev);
i915_gem_object_put(new_bo);
@ -1233,7 +1222,6 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
}
drm_modeset_lock_all(dev);
mutex_lock(&dev->struct_mutex);
ret = -EINVAL;
if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
@ -1290,7 +1278,6 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
ret = 0;
out_unlock:
mutex_unlock(&dev->struct_mutex);
drm_modeset_unlock_all(dev);
return ret;

4
drivers/gpu/drm/i915/gt/intel_reset.c
View File

@ -1288,10 +1288,6 @@ int intel_gt_terminally_wedged(struct intel_gt *gt)
if (!test_bit(I915_RESET_BACKOFF, &gt->reset.flags))
return -EIO;
/* XXX intel_reset_finish() still takes struct_mutex!!! */
if (mutex_is_locked(&gt->i915->drm.struct_mutex))
return -EAGAIN;
if (wait_event_interruptible(gt->reset.queue,
!test_bit(I915_RESET_BACKOFF,
&gt->reset.flags)))