[PATCH] charset: make u16_strnlen accessible at runtime

[Ilias Apalodimas]

commit 1fabfeef506c ("efi_loader: parameter check in GetNextVariableName()")
introduces a check using u16_strnlen(). This code is used on EFI
runtime variables as well, so unless we mark it as runtime, the kernel
will crash trying to access it.

Fixes: 1fabfeef506c ("efi_loader: parameter check in GetNextVariableName()")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
 lib/charset.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/charset.c b/lib/charset.c
index 5686d6fb59ce..2177014ee1c5 100644
--- a/lib/charset.c
+++ b/lib/charset.c
@@ -8,6 +8,7 @@
 #include <common.h>
 #include <charset.h>
 #include <capitalization.h>
+#include <efi_loader.h>
 #include <malloc.h>
 
 static struct capitalization_table capitalization_table[] =
@@ -372,7 +373,7 @@ size_t u16_strlen(const void *in)
 	return ret;
 }
 
-size_t u16_strnlen(const u16 *in, size_t count)
+size_t __efi_runtime u16_strnlen(const u16 *in, size_t count)
 {
 	size_t i;
 	for (i = 0; count-- && in[i]; i++);
-- 
2.29.2