fix param_sysfs_builtin name length check

[linux-2.6-omap-h63xx.git] / kernel / params.c

diff --git a/kernel/params.c b/kernel/params.c
index 16f269e9ddc9b7d4ed129f98f0deac4965b87507..2a4c51487e7257e1865ae33d805a22e3dbb7f9ae 100644 (file)
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -592,19 +592,16 @@ static void __init param_sysfs_builtin(void)
 
        for (i=0; i < __stop___param - __start___param; i++) {
                char *dot;
-               size_t kplen;
+               size_t max_name_len;
 
                kp = &__start___param[i];
-               kplen = strlen(kp->name);
+               max_name_len =
+                       min_t(size_t, MAX_KBUILD_MODNAME, strlen(kp->name));
 
-               /* We do not handle args without periods. */
-               if (kplen > MAX_KBUILD_MODNAME) {
-                       DEBUGP("kernel parameter name is too long: %s\n", kp->name);
-                       continue;
-               }
-               dot = memchr(kp->name, '.', kplen);
+               dot = memchr(kp->name, '.', max_name_len);
                if (!dot) {
-                       DEBUGP("couldn't find period in %s\n", kp->name);
+                       DEBUGP("couldn't find period in first %d characters "
+                              "of %s\n", MAX_KBUILD_MODNAME, kp->name);
                        continue;
                }
                name_len = dot - kp->name;