[PATCH v3] of: introduce helper to manage boolean
From: Jean-Christophe PLAGNIOL-VILLARD <hidden>
Date: 2012-03-13 17:03:49
Also in:
linux-arm-kernel
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
of_property_read_bool Search for a property in a device node. Returns true if the property exist false otherwise. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj-sclMFOaUSTBWk0Htik3J/w@public.gmane.org> Acked-by: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org> Cc: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org> --- v3: include Grant comment Grant can I get the go please? Best Regards, J. include/linux/of.h | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/include/linux/of.h b/include/linux/of.h
index a75a831..a992cdf 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h@@ -342,6 +342,22 @@ static inline int of_machine_is_compatible(const char *compat) #define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ +/** + * of_property_read_bool - Findfrom a property + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * + * Search for a property in a device node. + * Returns true if the property exist false otherwise. + */ +static inline bool of_property_read_bool(const struct device_node *np, + const char *propname) +{ + struct property *prop = of_find_property(np, propname, NULL); + + return prop ? false : true; +} + static inline int of_property_read_u32(const struct device_node *np, const char *propname, u32 *out_value)
--
1.7.7