diff options
Diffstat (limited to 'include/linux/serdev.h')
| -rw-r--r-- | include/linux/serdev.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/serdev.h b/include/linux/serdev.h index 531031a15cdd..f153b2c7f0cd 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); |