linux-kernel - [PATCH 13/14] tty: Merge conditional + error message + WARN

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Date:	Sun,  8 Nov 2015 13:01:20 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH 13/14] tty: Merge conditional + error message + WARN_ON()

WARN() does all of these things in one statement.

Signed-off-by: Peter Hurley <peter@...leysoftware.com>
---
 drivers/tty/tty_mutex.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c
index 0efcf71..77703a3 100644
--- a/drivers/tty/tty_mutex.c
+++ b/drivers/tty/tty_mutex.c
@@ -12,11 +12,8 @@
 
 void __lockfunc tty_lock(struct tty_struct *tty)
 {
-	if (tty->magic != TTY_MAGIC) {
-		pr_err("L Bad %p\n", tty);
-		WARN_ON(1);
+	if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty))
 		return;
-	}
 	tty_kref_get(tty);
 	mutex_lock(&tty->legacy_mutex);
 }
@@ -24,11 +21,8 @@ EXPORT_SYMBOL(tty_lock);
 
 void __lockfunc tty_unlock(struct tty_struct *tty)
 {
-	if (tty->magic != TTY_MAGIC) {
-		pr_err("U Bad %p\n", tty);
-		WARN_ON(1);
+	if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty))
 		return;
-	}
 	mutex_unlock(&tty->legacy_mutex);
 	tty_kref_put(tty);
 }
-- 
2.6.3

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