kconfig: add a function to get the CONFIG_ prefix

[carl9170fw.git] / config / lkc.h

diff --git a/config/lkc.h b/config/lkc.h
index b633bdb9f3d47c815be8727b155471167135626a..7aa9db0b2a7776513bfb7ad7f9a79d567509861a 100644 (file)
--- a/config/lkc.h
+++ b/config/lkc.h
@@ -39,6 +39,12 @@ extern "C" {
 #ifndef CONFIG_
 #define CONFIG_ "CONFIG_"
 #endif
+static inline const char *CONFIG_prefix(void)
+{
+       return CONFIG_;
+}
+#undef CONFIG_
+#define CONFIG_ CONFIG_prefix()
 
 #define TF_COMMAND     0x0001
 #define TF_PARAM       0x0002
@@ -90,8 +96,10 @@ struct conf_printer {
 /* confdata.c and expr.c */
 static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
 {
-       if (fwrite(str, len, count, out) < count)
-               fprintf(stderr, "\nError in writing or end of file.\n");
+       assert(len != 0);
+
+       if (fwrite(str, len, count, out) != count)
+               fprintf(stderr, "Error in writing or end of file.\n");
 }
 
 /* menu.c */