On Mon, Apr 16, 2018 at 12:25 PM, Eric Anholt <eric@xxxxxxxxxx> wrote:
> The GPU subsystem node was a workaround to have a central device to
> bind V3D and display to. Following the lead of 246774d17fc0
> ("drm/etnaviv: remove the need for a gpu-subsystem DT node"), remove
> the subsystem node usage and just create a platform device for the DRM
> device to attach to if any of the subsystem devices are present.
>
> v2: Simplify the DT walking code.
> +static bool
> +driver_of_table_has_a_match(const struct platform_driver *driver)
> +{
> + struct device_node *node;
> +
> + node = of_find_matching_node_and_match(NULL,
> + driver->driver.of_match_table,
> + NULL);
> + if (of_device_is_available(node)) {
> + of_node_put(node);
You need to put the node regardless.
> + return true;
> + }
> +
> + return false;
> +}
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