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 };