tty: Don't protect atomic operation with mutex · 8842dda236 - Gogs

tty: Don't protect atomic operation with mutex

test_bit() is already atomic; drop mutex lock/unlock.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Peter Hurley 12 years ago

parent

fc575ee6ea

commit

8842dda236

1 changed files with 0 additions and 2 deletions

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drivers/tty/tty_io.c
							 
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				@@ -1391,9 +1391,7 @@ static int tty_reopen(struct tty_struct *tty)
			
				 	}
			
				 	tty->count++;
			
				-	mutex_lock(&tty->ldisc_mutex);
			
				 	WARN_ON(!test_bit(TTY_LDISC, &tty->flags));
			
				-	mutex_unlock(&tty->ldisc_mutex);
			
				 	return 0;
			
				 }