of/flattree: fix of_flat_dt_is_compatible() to match the full compatible string

With the current string comparison, a device tree compatible of "foo-bar"
would match as compatible with a driver looking for "foo".  This patch
fixes the function to use the of_compat_cmp() macro so that it does the
right thing on all platforms (If sparc ever uses this code, it will still
want the strncasecmp() behaviour).

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index d61fda836e03bacfd7747e3e49f02ae093dc7603..dc876cbbd9dd7d6906a02b3f9c0daafe5ae0d53f 100644 (file)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -169,7 +169,7 @@ int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
        if (cp == NULL)
                return 0;
        while (cplen > 0) {
-               if (strncasecmp(cp, compat, strlen(compat)) == 0)
+               if (of_compat_cmp(cp, compat, strlen(compat)) == 0)
                        return 1;
                l = strlen(cp) + 1;
                cp += l;