On Fri, Apr 30, 2021 at 03:06:44PM +0200, Michael Walle wrote: > Sometimes a driver needs to know if the underlying regmap could sleep. > For example, consider the gpio-regmap driver which needs to fill the > gpiochip->can_sleep property. Whatever is creating the regmap really ought to know what device it's dealing with... > It might be possible to pass this information via the > gpio_regmap_config, but this has the following drawbacks. First, that > property is redundant and both places might contratict each other. And > secondly, the driver might not even know the type of the regmap because > it just gets an opaque pointer by querying the device tree. If it's a generic GPIO driver from a code correctness point of view it's always got a risk of sleeping...
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