linux-kernel - [PATCH 6/6] Driver core: fix 'dynamic

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Message-Id: <1225321092-21933-6-git-send-email-gregkh@suse.de>
Date:	Wed, 29 Oct 2008 15:58:12 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Jason Baron <jbaron@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 6/6] Driver core: fix 'dynamic_debug' cmd line parameter

From: Jason Baron <jbaron@...hat.com>

In testing 2.6.28-rc1, I found that passing 'dynamic_printk' on the command
line didn't activate the debug code. The problem is that dynamic_printk_setup()
(which activates the debugging) is being called before dynamic_printk_init() is
called (which initializes infrastructure). Fix this by setting setting the
state to 'DYNAMIC_ENABLED_ALL' in dynamic_printk_setup(), which will also
cause all subsequent modules to have debugging automatically started, which is
probably the behavior we want.

Signed-off-by: Jason Baron <jbaron@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 lib/dynamic_printk.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/lib/dynamic_printk.c b/lib/dynamic_printk.c
index d640f87..d83660f 100644
--- a/lib/dynamic_printk.c
+++ b/lib/dynamic_printk.c
@@ -402,6 +402,8 @@ static int __init dynamic_printk_init(void)
 				iter->logical_modname,
 				iter->flag_names, iter->hash, iter->hash2);
 	}
+	if (dynamic_enabled == DYNAMIC_ENABLED_ALL)
+		set_all(true);
 	return 0;
 }
 module_init(dynamic_printk_init);
@@ -411,7 +413,7 @@ static int __init dynamic_printk_setup(char *str)
 {
 	if (str)
 		return -ENOENT;
-	set_all(true);
+	dynamic_enabled = DYNAMIC_ENABLED_ALL;
 	return 0;
 }
 /* Use early_param(), so we can get debug output as early as possible */
-- 
1.6.0.2

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