[PATCH 1/2] iommu: apple: Mark device with DM_FLAG_VITAL

[Janne Grunau]

Avoids NULL pointer dereferences in apple_dart_unmap when the iommu
device is removed before its user. U-boot's device model does not track
dependencies between devices.
Observed on a M1 Ultra Mac Studio with v2024.10.

Signed-off-by: Janne Grunau <j at jannau.net>
---
 drivers/iommu/apple_dart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/apple_dart.c b/drivers/iommu/apple_dart.c
index 611ac7cd6deb4fccd45ccfe8cbb9b3e36e2af753..9df174f32d721c39079e65736c91e3e27a72ace2 100644
--- a/drivers/iommu/apple_dart.c
+++ b/drivers/iommu/apple_dart.c
@@ -312,5 +312,5 @@ U_BOOT_DRIVER(apple_dart) = {
 	.ops = &apple_dart_ops,
 	.probe = apple_dart_probe,
 	.remove = apple_dart_remove,
-	.flags	= DM_FLAG_OS_PREPARE
+	.flags	= DM_FLAG_OS_PREPARE | DM_FLAG_VITAL
 };

-- 
2.47.0