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path: root/drivers/gpu/drm/drm_property.c
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Diffstat (limited to 'drivers/gpu/drm/drm_property.c')
-rw-r--r--drivers/gpu/drm/drm_property.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
index 3e88fa24eab3..bc5128203056 100644
--- a/drivers/gpu/drm/drm_property.c
+++ b/drivers/gpu/drm/drm_property.c
@@ -709,6 +709,29 @@ err_created:
}
EXPORT_SYMBOL(drm_property_replace_global_blob);
+/**
+ * drm_property_replace_blob - replace a blob property
+ * @blob: a pointer to the member blob to be replaced
+ * @new_blob: the new blob to replace with
+ *
+ * Return: true if the blob was in fact replaced.
+ */
+bool drm_property_replace_blob(struct drm_property_blob **blob,
+ struct drm_property_blob *new_blob)
+{
+ struct drm_property_blob *old_blob = *blob;
+
+ if (old_blob == new_blob)
+ return false;
+
+ drm_property_blob_put(old_blob);
+ if (new_blob)
+ drm_property_blob_get(new_blob);
+ *blob = new_blob;
+ return true;
+}
+EXPORT_SYMBOL(drm_property_replace_blob);
+
int drm_mode_getblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{