Am 21.11.20 um 06:21 schrieb Andrey Grodzovsky:
Invalidate all BOs CPU mappings once device is removed.
v3: Move the code from TTM into drm_dev_unplug
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/drm_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 13068fd..d550fd5 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -479,6 +479,9 @@ void drm_dev_unplug(struct drm_device *dev)
synchronize_srcu(&drm_unplug_srcu);
drm_dev_unregister(dev);
+
+ /* Clear all CPU mappings pointing to this device */
+ unmap_mapping_range(dev->anon_inode->i_mapping, 0, 0, 1);
}
EXPORT_SYMBOL(drm_dev_unplug);
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