linux-kernel - [PATCH v2 1/2] printk: Add dummy routine for when CONFIG

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Date:	Wed, 21 Jan 2015 21:26:08 -0500
From:	Pranith Kumar <bobby.prani@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	"Steven Rostedt (Red Hat)" <rostedt@...dmis.org>,
	John Stultz <john.stultz@...aro.org>,
	Joe Perches <joe@...ches.com>, Petr Mladek <pmladek@...e.cz>,
	Simon Kågström 
	<simon.kagstrom@...insight.net>, Borislav Petkov <bp@...e.de>,
	Dan Streetman <ddstreet@...e.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-kernel@...r.kernel.org (open list)
Cc:	Michael Ellerman <mpe@...erman.id.au>
Subject: [PATCH v2 1/2] printk: Add dummy routine for when CONFIG_PRINTK=n

There are missing dummy routines for log_buf_addr_get() and log_buf_len_get()
for when CONFIG_PRINTK is not set causing build failures.

This patch adds these dummy routines at the appropriate location.

Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
CC: Michael Ellerman <mpe@...erman.id.au>
---
 include/linux/printk.h | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index aeb9d7f..baa3f97 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -10,9 +10,6 @@
 extern const char linux_banner[];
 extern const char linux_proc_banner[];
 
-extern char *log_buf_addr_get(void);
-extern u32 log_buf_len_get(void);
-
 static inline int printk_get_level(const char *buffer)
 {
 	if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
@@ -163,6 +160,8 @@ extern int kptr_restrict;
 
 extern void wake_up_klogd(void);
 
+char *log_buf_addr_get(void);
+u32 log_buf_len_get(void);
 void log_buf_kexec_setup(void);
 void __init setup_log_buf(int early);
 void dump_stack_set_arch_desc(const char *fmt, ...);
@@ -198,6 +197,16 @@ static inline void wake_up_klogd(void)
 {
 }
 
+static inline char *log_buf_addr_get(void)
+{
+	return NULL;
+}
+
+static inline u32 log_buf_len_get(void)
+{
+	return 0;
+}
+
 static inline void log_buf_kexec_setup(void)
 {
 }
-- 
1.9.1

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