From 36278a5d4d354e5d5610aa728831db9e03cc3d8d Mon Sep 17 00:00:00 2001
From: Alain Michaud <alainm@chromium.org>
Date: Wed, 11 Dec 2019 01:54:43 +0000
Subject: [PATCH] Bluetooth: Adding a bt_dev_warn_ratelimited macro.
Git-commit: 36278a5d4d354e5d5610aa728831db9e03cc3d8d
Patch-mainline: v5.6-rc1
References: jsc#SLE-13430

The macro will be used to display rate limited warning messages in the
log.

Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 include/net/bluetooth/bluetooth.h |  4 ++++
 net/bluetooth/lib.c               | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index fabee6db0abb..bd2675266859 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -129,6 +129,8 @@ void bt_warn(const char *fmt, ...);
 __printf(1, 2)
 void bt_err(const char *fmt, ...);
 __printf(1, 2)
+void bt_warn_ratelimited(const char *fmt, ...);
+__printf(1, 2)
 void bt_err_ratelimited(const char *fmt, ...);
 
 #define BT_INFO(fmt, ...)	bt_info(fmt "\n", ##__VA_ARGS__)
@@ -147,6 +149,8 @@ void bt_err_ratelimited(const char *fmt, ...);
 #define bt_dev_dbg(hdev, fmt, ...)				\
 	BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 
+#define bt_dev_warn_ratelimited(hdev, fmt, ...)			\
+	bt_warn_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 #define bt_dev_err_ratelimited(hdev, fmt, ...)			\
 	BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 
diff --git a/net/bluetooth/lib.c b/net/bluetooth/lib.c
index 63e65d9b4b24..c09e0a3a0ed9 100644
--- a/net/bluetooth/lib.c
+++ b/net/bluetooth/lib.c
@@ -183,6 +183,22 @@ void bt_err(const char *format, ...)
 }
 EXPORT_SYMBOL(bt_err);
 
+void bt_warn_ratelimited(const char *format, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, format);
+
+	vaf.fmt = format;
+	vaf.va = &args;
+
+	pr_warn_ratelimited("%pV", &vaf);
+
+	va_end(args);
+}
+EXPORT_SYMBOL(bt_warn_ratelimited);
+
 void bt_err_ratelimited(const char *format, ...)
 {
 	struct va_format vaf;
-- 
2.16.4