Re: [PATCH 1/6] drm: Add writeback connector type

[Boris Brezillon]

On Fri, 25 Nov 2016 16:48:59 +0000
Brian Starkey <brian.starkey@xxxxxxx> wrote:

> +/**
> + * drm_writeback_connector_init - Initialize a writeback connector and its properties
> + * @dev: DRM device
> + * @wb_connector: Writeback connector to initialize
> + * @funcs: Connector funcs vtable
> + * @formats: Array of supported pixel formats for the writeback engine
> + * @n_formats: Length of the formats array
> + *
> + * This function creates the writeback-connector-specific properties if they
> + * have not been already created, initializes the connector as
> + * type DRM_MODE_CONNECTOR_WRITEBACK, and correctly initializes the property
> + * values.
> + *
> + * Drivers should always use this function instead of drm_connector_init() to
> + * set up writeback connectors.
> + *
> + * Returns: 0 on success, or a negative error code
> + */
> +int drm_writeback_connector_init(struct drm_device *dev,
> +				 struct drm_writeback_connector *wb_connector,
> +				 const struct drm_connector_funcs *funcs,
> +				 u32 *formats, int n_formats)

This should probably be 'const u32 *formats', since developers are
likely to define a this array with a 'static const' specifier in their
driver.