backports: add bin2hex()

This is needed in the key backports in the next patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/backport/compat/backport-3.18.c b/backport/compat/backport-3.18.c
index 73db233c..d2eceef7 100644
--- a/backport/compat/backport-3.18.c
+++ b/backport/compat/backport-3.18.c
@@ -320,3 +320,13 @@ void memzero_explicit(void *s, size_t count)
 }
 EXPORT_SYMBOL_GPL(memzero_explicit);
 #endif
+
+char *bin2hex(char *dst, const void *src, size_t count)
+{
+	const unsigned char *_src = src;
+
+	while (count--)
+		dst = hex_byte_pack(dst, *_src++);
+	return dst;
+}
+EXPORT_SYMBOL(bin2hex);