[Intel-gfx] [PATCH 33/36] drm/i915/overlay: Drop struct_mutex guard
Chris Wilson
chris at chris-wilson.co.uk
Thu Aug 29 08:11:47 UTC 2019
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 at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/display/intel_display.c | 7 +------
drivers/gpu/drm/i915/display/intel_overlay.c | 13 -------------
drivers/gpu/drm/i915/gt/intel_reset.c | 4 ----
3 files changed, 1 insertion(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 2267bd93f14b..52e223c33321 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5707,13 +5707,8 @@ 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.
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 544e953342ea..6bdc9cdf297c 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -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;
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index febab368d8cf..2cd1de2eec80 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -1253,10 +1253,6 @@ int intel_gt_terminally_wedged(struct intel_gt *gt)
if (!test_bit(I915_RESET_BACKOFF, >->reset.flags))
return -EIO;
- /* XXX intel_reset_finish() still takes struct_mutex!!! */
- if (mutex_is_locked(>->i915->drm.struct_mutex))
- return -EAGAIN;
-
if (wait_event_interruptible(gt->reset.queue,
!test_bit(I915_RESET_BACKOFF,
>->reset.flags)))
--
2.23.0
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