From 4da2405606d47ca767e0c6ba556f127cfa2181d0 Mon Sep 17 00:00:00 2001 From: Jiri Slaby <jslaby@suse.cz> Date: Mon, 5 Mar 2012 14:52:08 +0100 Subject: [PATCH] TTY: serial, use atomic_inc_return in ioc4_serial We want to know the value of the atomic variable in intr_connect after the increment. But atomic_inc doesn't, per definition, return the value. It is just a pure coincidence that ia64 defines atomic_inc as atomic_inc_return. So fix this mistake by using atomic_inc_return properly. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/tty/serial/ioc4_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c index 6b36c1554d7e..dfec69a310ab 100644 --- a/drivers/tty/serial/ioc4_serial.c +++ b/drivers/tty/serial/ioc4_serial.c @@ -975,7 +975,7 @@ intr_connect(struct ioc4_soft *soft, int type, BUG_ON(!((type == IOC4_SIO_INTR_TYPE) || (type == IOC4_OTHER_INTR_TYPE))); - i = atomic_inc(&soft-> is_intr_type[type].is_num_intrs) - 1; + i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1; BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0))); /* Save off the lower level interrupt handler */ -- 2.20.1