Commit fadf79a0 authored Oct 02, 2021 by Lucas Stach Committed by Shawn Guo Oct 06, 2021

soc: imx: gpcv2: add lockdep annotation



Some of the GPCv2 power domains are nested inside each other without
visibility to lockdep at the genpd level, as they are in separate
driver instances and don't have a parent/child power-domain relationship.

Add a subclass annotation to the nested domains to let lockdep know that
it is okay to take the genpd lock in a nested fashion.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

parent 2b2f106e

drivers/soc/imx/gpcv2.c

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -898,6 +898,10 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
	goto out_domain_unmap;		goto out_domain_unmap;
	}		}

			if (IS_ENABLED(CONFIG_LOCKDEP) &&
			of_property_read_bool(domain->dev->of_node, "power-domains"))
			lockdep_set_subclass(&domain->genpd.mlock, 1);

	ret = of_genpd_add_provider_simple(domain->dev->of_node,		ret = of_genpd_add_provider_simple(domain->dev->of_node,
	&domain->genpd);		&domain->genpd);
	if (ret) {		if (ret) {