diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-starfive.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-starfive.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-starfive.c b/drivers/pinctrl/pinctrl-starfive.c index 2a86c1035cc8..3eb40e230d98 100644 --- a/drivers/pinctrl/pinctrl-starfive.c +++ b/drivers/pinctrl/pinctrl-starfive.c @@ -207,6 +207,7 @@ struct starfive_pinctrl { void __iomem *base; void __iomem *padctl; struct pinctrl_dev *pctl; + struct mutex mutex; /* serialize adding groups and functions */ }; static inline unsigned int starfive_pin_to_gpio(const struct starfive_pinctrl *sfp, @@ -522,6 +523,7 @@ static int starfive_dt_node_to_map(struct pinctrl_dev *pctldev, nmaps = 0; ngroups = 0; + mutex_lock(&sfp->mutex); for_each_child_of_node(np, child) { int npins; int i; @@ -615,12 +617,14 @@ static int starfive_dt_node_to_map(struct pinctrl_dev *pctldev, *maps = map; *num_maps = nmaps; + mutex_unlock(&sfp->mutex); return 0; put_child: of_node_put(child); free_map: pinctrl_utils_free_map(pctldev, map, nmaps); + mutex_unlock(&sfp->mutex); return ret; } @@ -1267,6 +1271,7 @@ static int starfive_probe(struct platform_device *pdev) platform_set_drvdata(pdev, sfp); sfp->gc.parent = dev; raw_spin_lock_init(&sfp->lock); + mutex_init(&sfp->mutex); ret = devm_pinctrl_register_and_init(dev, &starfive_desc, sfp, &sfp->pctl); if (ret) |