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...@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
