diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2008-11-12 19:54:42 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-11-19 06:05:00 +0100 |
| commit | 1e291b14c8f1101b9093434489bd4dc0e03f3d0f (patch) | |
| tree | ea602cce082e847d693b021d83f1314e9494c9a9 /include | |
| parent | powerpc: Optimise mutex (diff) | |
| download | linux-1e291b14c8f1101b9093434489bd4dc0e03f3d0f.tar.xz linux-1e291b14c8f1101b9093434489bd4dc0e03f3d0f.zip | |
of: Add helpers for finding device nodes which have a given property
This commit adds a routine for finding a device node which has a
certain property. The contents of the property are not taken into
account, merely the presence or absence of the property.
Based on that routine, we add a for_each_ macro for iterating over all
nodes that have a certain property.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/of.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index e2488f5e7cb2..6a7efa242f5e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -57,6 +57,12 @@ extern struct device_node *of_get_next_child(const struct device_node *node, for (child = of_get_next_child(parent, NULL); child != NULL; \ child = of_get_next_child(parent, child)) +extern struct device_node *of_find_node_with_property( + struct device_node *from, const char *prop_name); +#define for_each_node_with_property(dn, prop_name) \ + for (dn = of_find_node_with_property(NULL, prop_name); dn; \ + dn = of_find_node_with_property(dn, prop_name)) + extern struct property *of_find_property(const struct device_node *np, const char *name, int *lenp); |