add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/gpu/drm/drm_client_modeset.c
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@@ -308,6 +308,9 @@
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 	can_clone = true;
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 	dmt_mode = drm_mode_find_dmt(dev, 1024, 768, 60, false);
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+	if (!dmt_mode)
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+		goto fail;
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+
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 	for (i = 0; i < connector_count; i++) {
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 		if (!enabled[i])
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 			continue;
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@@ -323,11 +326,13 @@
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 		if (!modes[i])
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 			can_clone = false;
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 	}
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+	kfree(dmt_mode);
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 	if (can_clone) {
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 		DRM_DEBUG_KMS("can clone using 1024x768\n");
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 		return true;
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 	}
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+fail:
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 	DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
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 	return false;
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 }
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@@ -859,6 +864,7 @@
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 				break;
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 			}
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+			kfree(modeset->mode);
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 			modeset->mode = drm_mode_duplicate(dev, mode);
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 			drm_connector_get(connector);
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 			modeset->connectors[modeset->num_connectors++] = connector;