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-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 723d80d704e0..d6dc5e74c27c 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,
63 return pp ? pp->value : NULL; 63 return pp ? pp->value : NULL;
64} 64}
65EXPORT_SYMBOL(of_get_property); 65EXPORT_SYMBOL(of_get_property);
66
67/** Checks if the given "compat" string matches one of the strings in
68 * the device's "compatible" property
69 */
70int of_device_is_compatible(const struct device_node *device,
71 const char *compat)
72{
73 const char* cp;
74 int cplen, l;
75
76 cp = of_get_property(device, "compatible", &cplen);
77 if (cp == NULL)
78 return 0;
79 while (cplen > 0) {
80 if (of_compat_cmp(cp, compat, strlen(compat)) == 0)
81 return 1;
82 l = strlen(cp) + 1;
83 cp += l;
84 cplen -= l;
85 }
86
87 return 0;
88}
89EXPORT_SYMBOL(of_device_is_compatible);