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authorJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-03-27 00:33:14 +1100
committerPaul Mackerras <paulus@samba.org>2008-04-07 13:49:23 +1000
commit834d97d452208279edf11c57eca150360d2dd1d6 (patch)
tree9e5de1e017165c6d20a154313c8b97f315b8c59a /include
parent6ccf61f94fbac3e8715f2f938b27cdb3836c1f8c (diff)
[POWERPC] Add of_device_is_available function
IEEE 1275 defined a standard "status" property to indicate the operational status of a device. The property has four possible values: okay, disabled, fail, fail-xxx. The absence of this property means the operational status of the device is unknown or okay. This adds a function called of_device_is_available that checks the state of the status property of a device. If the property is absent or set to either "okay" or "ok", it returns 1. Otherwise it returns 0. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/of.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h
index 6981016dcc2..59a61bdc98b 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -62,6 +62,7 @@ extern struct property *of_find_property(const struct device_node *np,
int *lenp);
extern int of_device_is_compatible(const struct device_node *device,
const char *);
+extern int of_device_is_available(const struct device_node *device);
extern const void *of_get_property(const struct device_node *node,
const char *name,
int *lenp);