[PATCH v7 2/4] serdev: add rust private data to serdev_device

Markus Probst via B4 Relay
2026-04-29T18:22:02Z

Add rust private data to `struct serdev_device`, as it is required by the
rust abstraction added in the following commit
(rust: add basic serial device bus abstractions).

Signed-off-by: Markus Probst <markus.probst@posteo.de>
---
include/linux/serdev.h | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index b6c3d957ec15..048ef5857786 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -33,12 +33,14 @@ struct serdev_device_ops {

/**
* struct serdev_device - Basic representation of an serdev device
- * @dev: Driver model representation of the device.
- * @nr: Device number on serdev bus.
- * @ctrl: serdev controller managing this device.
- * @ops: Device operations.
- * @write_comp: Completion used by serdev_device_write() internally
- * @write_lock: Lock to serialize access when writing data
+ * @dev: Driver model representation of the device.
+ * @nr: Device number on serdev bus.
+ * @ctrl: serdev controller managing this device.
+ * @ops: Device operations.
+ * @write_comp: Completion used by serdev_device_write() internally
+ * @write_lock: Lock to serialize access when writing data
+ * @rust_private_data: Private data for the rust abstraction. This should
+ * not be used by the C drivers.
*/
struct serdev_device {
struct device dev;
@@ -47,6 +49,7 @@ struct serdev_device {
const struct serdev_device_ops *ops;
struct completion write_comp;
struct mutex write_lock;
+ void *rust_private_data;
};

#define to_serdev_device(d) container_of_const(d, struct serdev_device, dev)

--
2.53.0