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soc: imx: gpcv2: add lockdep annotation

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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) {