Drive by comment inline.
> diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
> index a8fc16c6bf37..ec8d875d31ff 100644
> --- a/include/linux/spi/spi.h
> +++ b/include/linux/spi/spi.h
> @@ -632,6 +632,9 @@ struct spi_controller {
> /* Flag indicating that the SPI bus is locked for exclusive use */
> bool bus_lock_flag;
>
> + /* Flag indicating the bus is reserved for use by hardware trigger */
> + bool offload_hw_trigger_enabled;
> +
> /*
> * Setup mode and clock, etc (SPI driver may call many times).
> *
> @@ -1594,12 +1597,26 @@ struct spi_controller_offload_ops {
> * @unprepare: Callback to release any resources used by prepare().
> */
> void (*unprepare)(struct spi_device *spi, unsigned int id);
> +
> + /**
> + * @hw_trigger_enable: Callback to enable the hardware trigger for the
> + * given offload instance.
> + */
> +
Blank line in odd place..
> + int (*hw_trigger_enable)(struct spi_device *spi, unsigned int id);
> + /**
> + * @hw_trigger_disable: Callback to disable the hardware trigger for the
> + * given offload instance.
> + */
> + void (*hw_trigger_disable)(struct spi_device *spi, unsigned int id);
> };
>
> extern int spi_offload_prepare(struct spi_device *spi, unsigned int id,
> struct spi_message *msg);
> extern void spi_offload_unprepare(struct spi_device *spi, unsigned int id,
> struct spi_message *msg);
> +extern int spi_offload_hw_trigger_enable(struct spi_device *spi, unsigned int id);
> +extern void spi_offload_hw_trigger_disable(struct spi_device *spi, unsigned int id);
>
> /*---------------------------------------------------------------------------*/
>
>
