[PATCH v2] batman-adv: Switch to linux/sprintf.h

[Sven Eckelmann <sven@narfation.org>]

The commit 39ced19b9e60 ("lib/vsprintf: split out sprintf() and friends")
introduced a new header for the sprintf related functions which were
previously exposed via linux/kernel.h.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
Changes in v2:
- version for out-of-tree kernel with compat header
- Link to v1: https://lore.kernel.org/r/20231030-sprintf_header-v1-1-2730d63953de@narfation.org
---
 compat-include/linux/sprintf.h         | 20 ++++++++++++++++++++
 net/batman-adv/bridge_loop_avoidance.c |  2 +-
 net/batman-adv/gateway_client.c        |  2 +-
 net/batman-adv/main.c                  |  1 +
 net/batman-adv/multicast.c             |  2 +-
 5 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/compat-include/linux/sprintf.h b/compat-include/linux/sprintf.h
new file mode 100644
index 00000000..d3823277
--- /dev/null
+++ b/compat-include/linux/sprintf.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This file contains macros for maintaining compatibility with older versions
+ * of the Linux kernel.
+ */
+
+#ifndef _NET_BATMAN_ADV_COMPAT_LINUX_SPRINTF_H_
+#define _NET_BATMAN_ADV_COMPAT_LINUX_SPRINTF_H_
+
+#include <linux/version.h>
+#if LINUX_VERSION_IS_GEQ(6, 6, 0)
+#include_next <linux/sprintf.h>
+#else
+#include <linux/kernel.h>
+#endif
+
+#endif /* _NET_BATMAN_ADV_COMPAT_LINUX_SPRINTF_H_ */
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 37ce6cfb..5f46ca3d 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -20,7 +20,6 @@
 #include <linux/if_vlan.h>
 #include <linux/jhash.h>
 #include <linux/jiffies.h>
-#include <linux/kernel.h>
 #include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/lockdep.h>
@@ -31,6 +30,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
+#include <linux/sprintf.h>
 #include <linux/stddef.h>
 #include <linux/string.h>
 #include <linux/workqueue.h>
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index d26124bc..0ddd8b4b 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -18,7 +18,6 @@
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
-#include <linux/kernel.h>
 #include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/lockdep.h>
@@ -29,6 +28,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
+#include <linux/sprintf.h>
 #include <linux/stddef.h>
 #include <linux/udp.h>
 #include <net/sock.h>
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index e8a44991..928c78a5 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -33,6 +33,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
+#include <linux/sprintf.h>
 #include <linux/stddef.h>
 #include <linux/string.h>
 #include <linux/workqueue.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 27511a06..7686caef 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -25,7 +25,6 @@
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/jiffies.h>
-#include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/lockdep.h>
 #include <linux/netdevice.h>
@@ -36,6 +35,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
+#include <linux/sprintf.h>
 #include <linux/stddef.h>
 #include <linux/string.h>
 #include <linux/types.h>

---
base-commit: 5fecd4a389cea1b9719e9ec480d7257887e0dfdf
change-id: 20231030-sprintf_header-47d656369468

Best regards,
-- 
Sven Eckelmann <sven@narfation.org>