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drm/vmwgfx: Fix F26 Wayland screen update issue
vmwgfx currently cannot support non-blocking commit because when vmw_*_crtc_page_flip is called, drm_atomic_nonblocking_commit() schedules the update on a thread. This means vmw_*_crtc_page_flip cannot rely on the new surface being bound before the subsequent dirty and flush operations happen. Cc: <stable@vger.kernel.org> # 4.12.x Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Charmaine Lee <charmainel@vmware.com>
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cc4a41fe55
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1 changed files with 25 additions and 1 deletions
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@ -1567,10 +1567,34 @@ vmw_kms_atomic_check_modeset(struct drm_device *dev,
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}
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/**
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* vmw_kms_atomic_commit - Perform an atomic state commit
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*
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* @dev: DRM device
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* @state: the driver state object
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* @nonblock: Whether nonblocking behaviour is requested
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*
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* This is a simple wrapper around drm_atomic_helper_commit() for
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* us to clear the nonblocking value.
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*
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* Nonblocking commits currently cause synchronization issues
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* for vmwgfx.
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*
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* RETURNS
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* Zero for success or negative error code on failure.
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*/
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int vmw_kms_atomic_commit(struct drm_device *dev,
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struct drm_atomic_state *state,
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bool nonblock)
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{
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return drm_atomic_helper_commit(dev, state, false);
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}
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static const struct drm_mode_config_funcs vmw_kms_funcs = {
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.fb_create = vmw_kms_fb_create,
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.atomic_check = vmw_kms_atomic_check_modeset,
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.atomic_commit = drm_atomic_helper_commit,
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.atomic_commit = vmw_kms_atomic_commit,
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};
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static int vmw_kms_generic_present(struct vmw_private *dev_priv,
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