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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>
This commit is contained in:
Lucas Stach 2021-10-02 02:59:40 +02:00 committed by Shawn Guo
parent 2b2f106eb5
commit fadf79a07b
1 changed files with 4 additions and 0 deletions
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4
drivers/soc/imx/gpcv2.c
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@ -898,6 +898,10 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
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,
&domain->genpd);
if (ret) {