Hi Daniel.

> +
> +     /**
> +      * @DRIVER_HAVE_DMA:
> +      *
> +      * Driver supports DMA, the userspace DMA API will be supported. Only
> +      * for legacy drivers. Do not use.
> +      */
> +     DRIVER_HAVE_DMA                 = BIT(4),

What about grouping all the "legacy, do not use" flags in the bottom.
Maybe counting backwards.

Then one does not have "noise" in-between when trying to rad and understand the
relevant flags for a new driver.
Unless I am mistaken nothing should break because we change the bit for a 
certain
function, but I see you kept the current order thus the current vlaues.


> @@ -662,7 +766,7 @@ static inline bool drm_dev_is_unplugged(struct drm_device 
> *dev)
>   * @feature: feature flag
>   *
>   * This checks @dev for driver features, see &drm_driver.driver_features,
> - * &drm_device.driver_features, and the various DRIVER_\* flags.
> + * &drm_device.driver_features, and the various &enum drm_driver_feature 
> flags.
>   *
>   * Returns true if the @feature is supported, false otherwise.
>   */

Thanks for fixing this - I had a patch floating to do the same.
But this fix is better than what I did.

With or without a change in ordering you can add:

Reviewed-by: Sam Ravnborg <s...@ravnborg.org>
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