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-rw-r--r--include/linux/serdev.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index d609e6dc5bad..48d8ce26ad18 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -27,8 +27,10 @@ struct serdev_device;
/**
* struct serdev_device_ops - Callback operations for a serdev device
- * @receive_buf: Function called with data received from device.
- * @write_wakeup: Function called when ready to transmit more data.
+ * @receive_buf: Function called with data received from device;
+ * returns number of bytes accepted; may sleep.
+ * @write_wakeup: Function called when ready to transmit more data; must
+ * not sleep.
*/
struct serdev_device_ops {
int (*receive_buf)(struct serdev_device *, const unsigned char *, size_t);
@@ -193,6 +195,7 @@ static inline int serdev_controller_receive_buf(struct serdev_controller *ctrl,
int serdev_device_open(struct serdev_device *);
void serdev_device_close(struct serdev_device *);
+int devm_serdev_device_open(struct device *, struct serdev_device *);
unsigned int serdev_device_set_baudrate(struct serdev_device *, unsigned int);
void serdev_device_set_flow_control(struct serdev_device *, bool);
int serdev_device_write_buf(struct serdev_device *, const unsigned char *, size_t);