From: Andrew Morton <akpm@linux-foundation.org>
Date: Thu, 22 May 2014 00:43:34 +0000 (+1000)
Subject: printk-release-lockbuf_lock-before-calling-console_trylock_for_printk-fix
X-Git-Tag: next-20140530~2^2~183
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3bd16050e9c555cb7b08a4f830db95e9025336e6;p=karo-tx-linux.git

printk-release-lockbuf_lock-before-calling-console_trylock_for_printk-fix

fix have_callable_console() comment

Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 5077c8294b41..ee7199b4259b 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1377,7 +1377,10 @@ static void zap_locks(void)
 	sema_init(&console_sem, 1);
 }
 
-/* Check if we have any console registered that can be called early in boot. */
+/*
+ * Check if we have any console that is capable of printing while cpu is
+ * booting or shutting down. Requires console_sem.
+ */
 static int have_callable_console(void)
 {
 	struct console *con;