Virtualization - Feb 2022 - [PATCH v2 01/11] driver: platform: add and use helper for safer setting of driver_override

On Wed, Feb 23, 2022 at 08:13:00PM +0100, Krzysztof Kozlowski
wrote:
> Several core drivers and buses expect that driver_override is a
> dynamically allocated memory thus later they can kfree() it.
> ...
> + * set_driver_override() - Helper to set or clear driver override.
Doesn't match actual function name.
> + * @dev: Device to change
> + * @override: Address of string to change (e.g.
&device->driver_override);
> + *            The contents will be freed and hold newly allocated
override.
> + * @s: NULL terminated string, new driver name to force a match, pass
empty
> + *     string to clear it
> + *
> + * Helper to setr or clear driver override in a device, intended for the
cases
> + * when the driver_override field is allocated by driver/bus code.
s/setr/set/
> + * Returns: 0 on success or a negative error code on failure.
> + */
> +int driver_set_override(struct device *dev, char **override, const char
*s)
> +{