| Message ID | 20210721204703.1424034-5-l.stach@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | i.MX8MM GPC improvements and BLK_CTRL driver | expand |
> Subject: [PATCH v2 04/18] 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> > --- > drivers/soc/imx/gpcv2.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index > 2c43e74db0be..35f26f57d1ac 100644 > --- a/drivers/soc/imx/gpcv2.c > +++ b/drivers/soc/imx/gpcv2.c > @@ -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) { > -- > 2.30.2
diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index 2c43e74db0be..35f26f57d1ac 100644 --- a/drivers/soc/imx/gpcv2.c +++ b/drivers/soc/imx/gpcv2.c @@ -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) {
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> --- drivers/soc/imx/gpcv2.c | 4 ++++ 1 file changed, 4 insertions(+)