From cf48a5870a7044c66821238fd83df707096114b0 Mon Sep 17 00:00:00 2001
From: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Date: Mon, 2 Dec 2019 17:03:57 -0800
Subject: [PATCH] lib: Add ba2strlc to match kernel printk format

When the kernel prints the bluetooth address (via %pMR), it prints the
address in lower case. ba2strlc should be used in cases where we should
match the kernel casing (i.e. addresses assigned to /dev/uhid and
/dev/uinput)
---
 lib/bluetooth.c | 7 +++++++
 lib/bluetooth.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/lib/bluetooth.c b/lib/bluetooth.c
index effc7f49d..7cba509d8 100644
--- a/lib/bluetooth.c
+++ b/lib/bluetooth.c
@@ -81,6 +81,13 @@ int ba2str(const bdaddr_t *ba, char *str)
 		ba->b[5], ba->b[4], ba->b[3], ba->b[2], ba->b[1], ba->b[0]);
 }
 
+/* Match kernel's lowercase printing of mac address (%pMR) */
+int ba2strlc(const bdaddr_t *ba, char *str)
+{
+	return sprintf(str, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+		ba->b[5], ba->b[4], ba->b[3], ba->b[2], ba->b[1], ba->b[0]);
+}
+
 int str2ba(const char *str, bdaddr_t *ba)
 {
 	int i;
diff --git a/lib/bluetooth.h b/lib/bluetooth.h
index eb279260e..756dce164 100644
--- a/lib/bluetooth.h
+++ b/lib/bluetooth.h
@@ -325,6 +325,7 @@ void baswap(bdaddr_t *dst, const bdaddr_t *src);
 bdaddr_t *strtoba(const char *str);
 char *batostr(const bdaddr_t *ba);
 int ba2str(const bdaddr_t *ba, char *str);
+int ba2strlc(const bdaddr_t *ba, char *str);
 int str2ba(const char *str, bdaddr_t *ba);
 int ba2oui(const bdaddr_t *ba, char *oui);
 int bachk(const char *str);
-- 
2.47.3