device property: Document how to check for the property presence

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Currently it's unclear if one may or may not rely on the error codes
returned from the property getters to check for the property presence.
Clarify this by updating kernel-doc for fwnode_property_*() and
device_property_*() where it's applicable.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/r/4b24f1f4-b395-467a-81b7-1334a2d48845@roeck-us.net
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patch.msgid.link/20260318142404.2526642-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andy Shevchenko 2026-03-18 15:21:40 +01:00 • committed by Greg Kroah-Hartman

parent 7215e4552f

commit 70fa0c308a

1 changed files with 11 additions and 3 deletions

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drivers/base/property.c

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