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commitcfec502b3dupstream. Regardless of the DeviceContext of a device, we can't give any guarantees about the DeviceContext of its parent device. This is very subtle, since it's only caused by a simple typo, i.e. Self::from_raw(parent) which preserves the DeviceContext in this case, vs. Device::from_raw(parent) which discards the DeviceContext. (I should have noticed it doing the correct thing in auxiliary::Device subsequently, but somehow missed it.) Hence, fix both Device::parent() and auxiliary::Device::parent(). Cc: stable@vger.kernel.org Fixes:a4c9f71e34("rust: device: implement Device::parent()") Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>