[PATCHv6+ 01/13] of: introduce of_property_for_earch_phandle_with_args()
From: Hiroshi Doyu <hidden>
Date: 2013-11-21 17:17:39
Also in:
linux-devicetree, linux-iommu, linux-tegra, lkml
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
Iterating over a property containing a list of phandles with arguments is a common operation for device drivers. This patch adds a new of_property_for_each_phandle_with_args() macro to make the iteration simpler. Signed-off-by: Hiroshi Doyu <redacted> --- v6+: Use the description, which Grant Likely proposed, to be full enough that a future reader can figure out why a patch was written. http://lists.linuxfoundation.org/pipermail/iommu/2013-November/007062.html v5: New patch for v5. --- include/linux/of.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/linux/of.h b/include/linux/of.h
index 276c546..131fef5 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h@@ -613,6 +613,9 @@ static inline int of_property_read_u32(const struct device_node *np, s; \ s = of_prop_next_string(prop, s)) +#define of_property_for_each_phandle_with_args(np, list, cells, i, args) \ + for (i = 0; !of_parse_phandle_with_args(np, list, cells, i, args); i++) + #if defined(CONFIG_PROC_FS) && defined(CONFIG_PROC_DEVICETREE) extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop);
--
1.8.1.5