Check incoming pointer

[platform/upstream/kbd.git] / src / libkeymap / common.c

diff --git a/src/libkeymap/common.c b/src/libkeymap/common.c
index 294a945..96cbd89 100644 (file)
--- a/src/libkeymap/common.c
+++ b/src/libkeymap/common.c
@@ -31,13 +31,16 @@ lkerror(const char *file attr_unused, int line attr_unused, const char *fn attr_
 }
 
 int
-lk_init(struct keymap *km)
+lk_init(struct keymap *kmap)
 {
-       memset(km, 0, sizeof(struct keymap));
+       if (!kmap)
+               return -1;
 
-       km->verbose     = LOG_NORMAL;
-       km->log_message = lkmessage;
-       km->log_error   = lkerror;
+       memset(kmap, 0, sizeof(struct keymap));
+
+       kmap->verbose     = LOG_NORMAL;
+       kmap->log_message = lkmessage;
+       kmap->log_error   = lkerror;
 
        return 0;
 }
@@ -47,6 +50,10 @@ void
 lk_free(struct keymap *kmap)
 {
        int i;
+
+       if (!kmap)
+               return;
+
        for (i = 0; i < MAX_NR_KEYMAPS; i++) {
                if (kmap->keymap_was_set[i] != NULL)
                        free(kmap->keymap_was_set[i]);