Re: [PATCH v3 1/7] mfd: syscon: Add reference counting and device managed support

From: Markus Elfring
Date: Thu Jul 11 2024 - 12:10:27 EST



> +++ b/drivers/mfd/syscon.c

> +static struct syscon *syscon_from_regmap(struct regmap *regmap)
+{
> + struct syscon *entry, *syscon = NULL;
> +
> + spin_lock(&syscon_list_slock);
> +
> + list_for_each_entry(entry, &syscon_list, list)

> + spin_unlock(&syscon_list_slock);
> +
> + return syscon;
> +}


Under which circumstances would you become interested to apply a statement
like “guard(spinlock)(&syscon_list_slock);”?
https://elixir.bootlin.com/linux/v6.10-rc7/source/include/linux/spinlock.h#L561

Regards,
Markus