Re: [PATCH V3 10/14] i3c: master: Add helper to query bus wakeup requirements

On 8/4/2026 7:08 PM, Adrian Hunter wrote:
[...]

> diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
> index 8c9e62e6f146..baf4769f0512 100644
> --- a/drivers/i3c/master.c
> +++ b/drivers/i3c/master.c
> @@ -2150,6 +2150,41 @@ static void i3c_master_reg_work_fn(struct work_struct *work)
>   	i3c_master_register_new_i3c_devs(master);
>   }
>   
> +/**
> + * i3c_master_any_wakeup_enabled() - check if any device can wake the system
> + * @master: I3C master controller
> + *
> + * Iterate over devices on the bus and return true if any device has
> + * system wakeup enabled and IBI enabled.
> + *
> + * Whether a device is enabled for system wakeup is user space policy,
> + * settable at any time through the device's power/wakeup sysfs attribute,
> + * so the answer is only stable once user space is frozen.  Call this from
> + * a system suspend callback.
> + *
> + * Return: true if any device may wake the system via IBI, false otherwise.
> + */
> +bool i3c_master_any_wakeup_enabled(struct i3c_master_controller *master)

wanted to suggest if this function name suits 
?i3c_master_has_wakeup_enabled_devs()
> +{
> +	struct i3c_dev_desc *desc;
> +	bool wakeup = false;
> +
> +	i3c_bus_normaluse_lock(&master->bus);
> +	i3c_bus_for_each_i3cdev(&master->bus, desc) {
> +		if (!desc->dev || desc == master->this || !device_may_wakeup(&desc->dev->dev))
> +			continue;
> +		guard(mutex)(&desc->ibi_lock);
> +		if (desc->ibi && desc->ibi->enabled) {
> +			wakeup = true;
> +			break;
> +		}
> +	}
> +	i3c_bus_normaluse_unlock(&master->bus);
> +
> +	return wakeup;
> +}
> +EXPORT_SYMBOL_GPL(i3c_master_any_wakeup_enabled);\[...]
[...]

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