linux-kernel - [PATCH 1/2] ttyprintk: Fix wrong tty_unregister

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Date:	Wed,  2 Apr 2014 12:29:41 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jean Delvare <jdelvare@...e.de>,
	Struan Bartlett <struan.bartlett@...il.com>,
	Andreas Schwab <schwab@...ux-m68k.org>,
	gnomes@...rguk.ukuu.org.uk, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] ttyprintk: Fix wrong tty_unregister_driver() call in the error path

ttyprintk driver calls tty_unregister_driver() wrongly in the error
path of tty_register_driver().  Also, setting ttyprintk_driver to NULL
is utterly superfluous, so let's get rid of it, too.

Reported-by: Jean Delvare <jdelvare@...e.de>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 drivers/char/ttyprintk.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c
index daea84c41743..2a39c5790364 100644
--- a/drivers/char/ttyprintk.c
+++ b/drivers/char/ttyprintk.c
@@ -210,10 +210,8 @@ static int __init ttyprintk_init(void)
 	return 0;
 
 error:
-	tty_unregister_driver(ttyprintk_driver);
 	put_tty_driver(ttyprintk_driver);
 	tty_port_destroy(&tpk_port.port);
-	ttyprintk_driver = NULL;
 	return ret;
 }
 device_initcall(ttyprintk_init);
-- 
1.9.1

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