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authorStephen Rothwell <sfr@canb.auug.org.au>2007-05-01 16:29:19 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2007-07-20 13:29:51 +1000
commit0081cbc3731de8ad4744ba433af51f17bf27eb9c (patch)
treeb03e5c4b7087ad78a230722850a29a72b2960663 /drivers/of/base.c
parent97e873e5c8ad8711ce4cca080cff4eb5d21b3aeb (diff)
Consolidate of_device_is_compatible
The only difference here is that Sparc uses strncmp to match compatibility names while PowerPC uses strncasecmp. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of/base.c')
-rw-r--r--drivers/of/base.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 723d80d704e..d6dc5e74c27 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -63,3 +63,27 @@ const void *of_get_property(const struct device_node *np, const char *name,
return pp ? pp->value : NULL;
}
EXPORT_SYMBOL(of_get_property);
+
+/** Checks if the given "compat" string matches one of the strings in
+ * the device's "compatible" property
+ */
+int of_device_is_compatible(const struct device_node *device,
+ const char *compat)
+{
+ const char* cp;
+ int cplen, l;
+
+ cp = of_get_property(device, "compatible", &cplen);
+ if (cp == NULL)
+ return 0;
+ while (cplen > 0) {
+ if (of_compat_cmp(cp, compat, strlen(compat)) == 0)
+ return 1;
+ l = strlen(cp) + 1;
+ cp += l;
+ cplen -= l;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(of_device_is_compatible);