提交 5273382d 编写于 作者: D Daniel Scally 提交者: Mauro Carvalho Chehab

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NDaniel Scally <djrscally@gmail.com>
Reviewed-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
上级 ec9ded4f
......@@ -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);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册