Commit 5273382d authored by Daniel Scally's avatar Daniel Scally Committed by Mauro Carvalho Chehab
Browse files

media: device property: Return true in fwnode_device_is_available for NULL ops 



Some types of fwnode_handle do not implement the device_is_available()
check, such as those created by software_nodes. There isn't really a
meaningful way to check for the availability of a device that doesn't
actually exist, so if the check isn't implemented just assume that the
"device" is present.

Suggested-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarDaniel Scally <djrscally@gmail.com>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent ec9ded4f

drivers/base/property.c

+6 −0
Original line number Diff line number Diff line
@@ -837,9 +837,15 @@ EXPORT_SYMBOL_GPL(fwnode_handle_put); 
/**

 * fwnode_device_is_available - check if a device is available for use

 * @fwnode: Pointer to the fwnode of the device.

 *

 * For fwnode node types that don't implement the .device_is_available()

 * operation, this function returns true.

 */

bool fwnode_device_is_available(const struct fwnode_handle *fwnode)

{

	if (!fwnode_has_op(fwnode, device_is_available))

		return true;



	return fwnode_call_bool_op(fwnode, device_is_available);

}

EXPORT_SYMBOL_GPL(fwnode_device_is_available);