From: Thierry Reding <treding@xxxxxxxxxx>
This is a helper function that can be used in iterators, such as
bus_find_device(), and will always match. This is useful to implement a
custom iterator interface on top of bus_find_device() or to check if any
devices have been registered at all.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
include/linux/device.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/device.h b/include/linux/device.h
index 38f02814d53a..bea9566cea96 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1031,6 +1031,11 @@ extern int device_online(struct device *dev);
extern void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode);
extern void set_secondary_fwnode(struct device *dev, struct fwnode_handle *fwnode);
+static inline int device_match_always(struct device *device, void *data)
+{
+ return 1;
+}
+
/*
* Root device objects for grouping under /sys/devices
*/
--
2.8.3
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